Session Notes for rd1411 (OCEL04) - prepared by Ruediger Haas =============================================================== PURPOSE AND GENERAL NOTES =============================================================== ===> OCEL - Observations of the Chang'E-3 lander with VLBI <=== This information is distributed via email to HartRAO: vlbi@hartrao.ac.za Jonathan Quick Marisa Nickola Hobart: AuScope Operations James Lovell Lucia Plank Kokee: kokee Kokee Park Geophysical Observatory <#KPGO@exelisinc.com> Matera: Matera vlbi Giovanni Nettis Colucci Giuseppe Ny-AAlesund: VLBI Ny-lesund Moritz Sieber Alexander Neidhardt RT-20m Wettzell Urumqi: Wengjun Yan Xiang Liu NASA/NVI: "Behrend, Dirk (GSFC-698.0)[NVI INC]" "Cynthia C. Thomas" Ed Himwich UBonn: Axel Nothnagel Alessandra Bertarini Laura la Porta BAAC: Tang Geshi Onsala: Rdiger Haas IVS: ivs-stations@ivscc.gsfc.nasa.gov -------------- a) Background: -------------- Tang Geshi and several co-PIs proposed in May 2014 to observe the Chinese Lunar Lander Chang'E-3 with VLBI. This proposal was accepted by the IVS PC and a series of RD-sessions was allocated for this purpose. The scheduling is done by R. Haas (Chalmers University of Technology, Sweden), the Lunar Lander apriori positions are provided by Tang Geshi (BAAC, China), the primary correlation will be done by the Bonn correlator and special correlation issues will be looked into by the correlators at BAAC (China) and Onsala (Sweden). The data will be analyzed by the proposing consortium (PIs), and the data have a one year data hold. ------------ b) Schedule: ------------ The 4rd OCEL-session is on November 4/5 when the Chang'E-3 lander will be actively sending on several X-band channels, among them a data channel and several DOR tones. However, the lander will only be active during parts of the 24 h session. During the active period of the lander, alternating geodetic and phase-referencing observations will be performed, in intervals of 30 min each. The station network consists of 7 stations: Hart15m, Hobart26, Kokee, Matera, Nyales20, Urumqi, Wettzell The schedule looks as follows: - 17:30-23:26 alternating geodetic and phase-referencing observations - 23:26-08:30 geodetic observations - 08:30-17:00 alternating geodetic and phase-referencing observations - 17:00-17:30 geodetic observations The first lunar lander observations for Ny-Ma-Ur-Ht-Wz at 308-18:05:57, and for Ho-Kk at 309-08:31:31 are 300 s and 240 s long, respectively, in order to allow for adjustment of suitable attenuation levels. There are in total 15 phase-referencing (PR) intervals: --------------------------------------------------- Phase referencing PR-01 ----------------------- - 5 stations: Ny, Ma, Ur, Ht, Wz - 2 sources: 0003-066, 0054+161 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14308-180557| 300 300 300 300 300| 0054+161 14308-181139| 207 281 281 198 156| OCEL.04 14308-181702| 30 30 30 30 30| 0054+161 14308-181808| 140 140 | 0003-066 14308-181831| 74 74 41| OCEL.04 14308-182104| 30 30 30 30 30| 0054+161 14308-182210| 140 140 110| 0003-066 14308-182233| 73 73 | OCEL.04 14308-182506| 30 30 30 30 30| 0054+161 14308-182612| 140 140 | 0003-066 14308-182635| 73 73 41| OCEL.04 14308-182908| 30 30 30 30 30| 0054+161 14308-183020| 207 281 281 198 155| --------------------------------------------------- --------------------------------------------------- Phase referencing PR-02 ----------------------- - 5 stations: Ny, Ma, Ur, Ht, Wz - 4 sources: 0054+161, 0119+041, 0119+115, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14308-190138| 30 30 30 30 30| 0119+115 14308-190248| 30 30 | 2355-106 14308-190317| 49 49 30| OCEL.04 14308-190514| 30 30 30 30 30| 0119+115 14308-190624| 30 30 30| 2355-106 14308-190653| 49 49 | OCEL.04 14308-190850| 30 30 30 30 30| 0119+115 14308-190956| 30 30| 2355-106 14308-191029| 40 49 49 | OCEL.04 14308-191226| 30 30 30 30 30| 0119+041 14308-191335| 83 83 39| 2355-106 14308-191405| 49 49 | OCEL.04 14308-191602| 30 30 30 30 30| 0054+161 14308-191714| 207 281 281 198 153| OCEL.04 14308-192237| 30 30 30 30 30| 0119+115 14308-192343| 30 30| 2355-106 14308-192416| 40 49 49 | OCEL.04 14308-192613| 30 30 30 30 30| 0119+041 14308-192722| 78 78 | 2355-106 14308-192752| 49 49 30| OCEL.04 14308-192949| 30 30 30 30 30| --------------------------------------------------- --------------------------------------------------- Phase referencing PR-03 ----------------------- - 5 stations: Ny, Ma, Ur, Ht, Wz - 5 sources: 0003-066, 0054+161, 0119+041, 0119+115, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14308-200443| 30 30 30 30 30| 0119+115 14308-200553| 30 30 30 30| OCEL.04 14308-200703| 30 30 30 30 30| 0054+161 14308-200809| 136 136 | 0119+041 14308-200812| 67 67 38| 0003-066 14308-201132| 97 179 179 91| OCEL.04 14308-201531| 30 30 30 30 30| 0119+115 14308-201637| 30 30 | 2355-106 14308-201658| 40 40 30| OCEL.04 14308-201835| 30 30 30 30 30| 0119+115 14308-201941| 30 30 30| 2355-106 14308-202002| 40 40 | OCEL.04 14308-202139| 30 30 30 30 30| 0054+161 14308-202251| 206 206 201 198 153| OCEL.04 14308-202659| 30 30 30 30 30| 0054+161 14308-202805| 136 136 | 0119+041 14308-202808| 64 64 38| --------------------------------------------------- --------------------------------------------------- Phase referencing PR-04 ----------------------- - 5 stations: Ny, Ma, Ur, Ht, Wz - 4 sources: 0003-066, 0054+161, 0119+115, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14308-210034| 30 30 30 30 30| 0054+161 14308-210140| 136 136 | 0119+115 14308-210143| 30 30 30| OCEL.04 14308-210432| 30 30 30 30 30| 0119+115 14308-210538| 30 30 | 0003-066 14308-210555| 98 98 92| OCEL.04 14308-210825| 30 30 30 30 30| 0119+115 14308-210931| 30 30 | 2355-106 14308-210948| 40 40 30| OCEL.04 14308-211120| 30 30 30 30 30|ZZ 0054+161 14308-211234| 206 206 201 198 152| OCEL.04 14308-211644| 30 30 30 30 30| 0119+115 14308-211750| 30 30 30| 2355-106 14308-211806| 40 40 | OCEL.04 14308-211937| 30 30 30 30 30| 0119+115 14308-212046| 30 30 30 | 2355-106 14308-212050| 30 30| OCEL.04 14308-212203| 30 30 30 30 30| 0119+115 14308-212309| 30 30 | 0003-066 14308-212324| 99 99 93| OCEL.04 14308-212553| 30 30 30 30 30| 0119+115 14308-212659| 30 30 30| 2355-106 14308-212714| 40 40 | OCEL.04 14308-212844| 30 30 30 30 30| 0054+161 14308-212959| 206 206 201 198 152| --------------------------------------------------- --------------------------------------------------- Phase referencing PR-05 ----------------------- - 4 stations: Ny, Ma, Ht, Wz - 6 sources: 0003-066, 0048-097, 0054+161, 0119+115, 2318+049, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14308-220042| 30 30 30 30| 0119+115 14308-220148| 30 30| 2355-106 14308-220203| 40 40 | OCEL.04 14308-220334| 30 30 30 30| 0119+115 14308-220440| 30 30| 2355-106 14308-220455| 40 40 | OCEL.04 14308-220626| 30 30 30 30| 0119+115 14308-220735| 30 30 | 2355-106 14308-220735| 30 30| OCEL.04 14308-220844| 30 30 30 30| 0054+161 14308-221000| 206 206 198 153| OCEL.04 14308-221412| 30 30 30 30| 0003-066 14308-221518| 98 98| 0119+115 14308-221521| 30 30 | OCEL.04 14308-221732| 30 30 30 30| 0054+161 14308-221838| 139 139 | 0048-097 14308-221849| 262 262| OCEL.04 14308-222358| 30 30 30 30| 2355-106 14308-222506| 30 30| 0119+115 14308-222507| 30 30 | OCEL.04 14308-222616| 30 30 30 30| 0119+115 14308-222722| 30 30| 2355-106 14308-222737| 40 40 | OCEL.04 14308-222908| 30 30 30 30| 2318+049 14308-223035| 96 96 75 67| --------------------------------------------------- --------------------------------------------------- Phase referencing PR-06 ----------------------- - 4 stations: Ny, Ma, Ht, Wz - 5 sources: 0003-066, 0054+161, 0119+115, 2318+049, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14308-230004| 30 30 30 30| 0054+161 14308-230120| 207 207 198 153| OCEL.04 14308-230533| 30 30 30 30| 0119+115 14308-230639| 30 30| 0054+161 14308-230649| 198 198 | OCEL.04 14308-231053| 30 30 30 30| 0119+115 14308-231159| 30 30| 2355-106 14308-231215| 40 40 | OCEL.04 14308-231347| 30 30 30 30| 2355-106 14308-231453| 30 30| 0119+041 14308-231456| 75 75 | OCEL.04 14308-231651| 30 30 30 30| 0119+115 14308-231757| 30 30| 0003-066 14308-231810| 107 107 | OCEL.04 14308-232046| 30 30 30 30| 2355-106 14308-232152| 30 30| 0119+115 14308-232155| 30 30 | OCEL.04 14308-232304| 30 30 30 30| 2355-106 14308-232410| 30 30| 0119+115 14308-232413| 30 30 | OCEL.04 14308-232522| 30 30 30 30| 2318+049 14308-232644| 98 98 75 70| --------------------------------------------------- --------------------------------------------------- Phase referencing PR-07 ----------------------- - 2 stations: Ho, Kk - 2 sources: 0054+161, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-083131| 240 240 | OCEL.04 14309-083614| 30 30 | 2355-106 14309-083819| 100 100 | OCEL.04 14309-084133| 30 30 | 0054+161 14309-084313| 109 109 | OCEL.04 14309-084612| 30 30 | 2355-106 14309-084815| 100 100 | OCEL.04 14309-085127| 30 30 | 0054+161 14309-085307| 108 108 | OCEL.04 14309-085605| 30 30 | 2355-106 14309-085806| 100 100 | --------------------------------------------------- --------------------------------------------------- Phase referencing PR-08 ----------------------- - 2 stations: Ho, Kk - 2 sources: 0054+161, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-092945| 30 30 | 2355-106 14309-093141| 100 100 | OCEL.04 14309-093447| 30 30 | 0054+161 14309-093625| 104 104 | OCEL.04 14309-093917| 30 30 | 2355-106 14309-094112| 100 100 | OCEL.04 14309-094417| 30 30 | 0054+161 14309-094555| 104 104 | OCEL.04 14309-094847| 30 30 | 2355-106 14309-095042| 100 100 | OCEL.04 14309-095346| 30 30 | 0054+161 14309-095523| 103 103 | OCEL.04 14309-095813| 30 30 | 2355-106 14309-100007| 100 100 | --------------------------------------------------- --------------------------------------------------- Phase referencing PR-09 ----------------------- - 2 stations: Ho, Kk - 2 sources: 0054+161, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-103322| 30 30 | 2355-106 14309-103514| 101 101 | OCEL.04 14309-103817| 30 30 | 0054+161 14309-103953| 102 102 | OCEL.04 14309-104241| 30 30 | 2355-106 14309-104433| 102 102 | OCEL.04 14309-104736| 30 30 | 0054+161 14309-104912| 102 102 | OCEL.04 14309-105200| 30 30 | 2355-106 14309-105352| 102 102 | OCEL.04 14309-105655| 30 30 | 0054+161 14309-105831| 102 102 | --------------------------------------------------- --------------------------------------------------- Phase referencing PR-10 ----------------------- - 3 stations: Ur, Ho, Kk - 2 sources: 0054+161, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-113455| 30 30 30 | 0054+161 14309-113631| 129 108 129 | OCEL.04 14309-113925| 30 30 30 | 2355-106 14309-114117| 131 74 131 | OCEL.04 14309-114412| 30 30 30 | 0054+161 14309-114548| 129 108 129 | OCEL.04 14309-114842| 30 30 30 | 2355-106 14309-115034| 132 74 132 | OCEL.04 14309-115330| 30 30 30 | 0054+161 14309-115506| 129 108 129 | OCEL.04 14309-115800| 30 30 30 | 2355-106 14309-115952| 134 74 134 | --------------------------------------------------- --------------------------------------------------- Phase referencing PR-11 ----------------------- - 3 stations: Ur, Ho, Kk - 2 sources: 0054+161, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-122954| 30 30 30 | 0054+161 14309-123130| 131 110 131 | OCEL.04 14309-123426| 30 30 30 | 2355-106 14309-123618| 150 74 150 | OCEL.04 14309-123934| 30 30 30 | 0054+161 14309-124110| 132 110 132 | OCEL.04 14309-124406| 30 30 30 | 2355-106 14309-124558| 159 74 159 | OCEL.04 14309-124923| 30 30 30 | 0054+161 14309-125059| 133 111 133 | OCEL.04 14309-125356| 30 30 30 | 2355-106 14309-125548| 176 81 176 | OCEL.04 14309-125931| 30 30 30 | --------------------------------------------------- --------------------------------------------------- Phase referencing PR-12 ----------------------- - 3 stations: Ur, Ho, Kk - 2 sources: 0025+197, 0054+161 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-133300| 30 30 30 | 0054+161 14309-133437| 139 117 139 | OCEL.04 14309-133741| 30 30 30 | 0025+197 14309-133926| 297 272 297 | OCEL.04 14309-134513| 30 30 30 | 0054+161 14309-134650| 142 120 142 | OCEL.04 14309-134957| 30 30 30 | 0025+197 14309-135143| 300 273 300 | OCEL.04 14309-135733| 30 30 30 | 0054+161 14309-135911| 146 124 146 | --------------------------------------------------- --------------------------------------------------- Phase referencing PR-13 ----------------------- - 3 stations: Ur, Ho, Kk - 2 sources: 0054+161, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-143130| 30 30 30 | 0054+161 14309-143309| 166 149 166 | OCEL.04 14309-143647| 30 30 30 | 0054+161 14309-143827| 176 159 176 | OCEL.04 14309-144216| 30 30 30 | 0054+161 14309-144356| 110 110 | OCEL.04 14309-144656| 30 30 | 2355-106 14309-144900| 76 76 | OCEL.04 14309-145150| 30 30 | 0054+161 14309-145331| 111 111 | OCEL.04 14309-145633| 30 30 | 2355-106 14309-145839| 76 76 | --------------------------------------------------- --------------------------------------------------- Phase referencing PR-14 ----------------------- - 6 stations: Ny, Ma, Ur, Ht, Ho, Wz - 2 sources: 0054+161, 2355-106 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-153248| 30 30 30 30 30 30| 0119+115 14309-153357| 30 30 30 | 2355-106 14309-153505| 73 73 57| OCEL.04 14309-153806| 30 30 30 30 30 30| 0119+115 14309-153915| 30 30 30 | 2355-106 14309-154025| 73 73 55| OCEL.04 14309-154328| 30 30 30 30 30 30| 0119+115 14309-154437| 30 30 30| 2355-106 14309-154550| 85 85 78 | OCEL.04 14309-154901| 30 30 30 30 30 30| 0119+115 14309-155010| 30 30 30| 2355-106 14309-155125| 85 85 79 | OCEL.04 14309-155440| 30 30 30 30 30 30| 0119+115 14309-155549| 30 30 30| 2355-106 14309-155708| 85 85 79 | --------------------------------------------------- --------------------------------------------------- Phase referencing PR-15 ----------------------- - 6 stations: Ny, Ma, Ur, Ht, Ho, Wz - 4 sources: 0048-097, 0119+041, 0119+115, 0201+113 --------------------------------------------------- Source Start DURATIONS name yyddd-hhmmss Ny Ma Ur Ht Ho Kk Wz --------------------------------------------------- OCEL.04 14309-162626| 30 30 30 30 30 30| 0119+115 14309-162735| 30 30 30 30| 0119+115 14309-162759| 30 30 | OCEL.04 14309-162932| 30 30 30 30 30 30| 0201+113 14309-163046| 91 112 112 61| 0119+115 14309-163105| 30 30 | OCEL.04 14309-163322| 30 30 30 30 30 30| 0119+041 14309-163430| 184 280 280 105| 0119+115 14309-163455| 30 30 | OCEL.04 14309-163948| 30 30 30 30 30 30| 0119+041 14309-164056| 179 300 300 111| 0048-097 14309-164216| 247 247 | OCEL.04 14309-164825| 30 30 30 30 30 30| 0119+115 14309-164934| 30 30 30 30| 0119+115 14309-164959| 30 30 | OCEL.04 14309-165133| 30 30 30 30 30 30| 0201+113 14309-165247| 89 119 119 61| 0119+115 14309-165307| 30 30 | OCEL.04 14309-165530| 30 30 30 30 30 30| 0201+113 14309-165644| 89 120 120 61| 0119+115 14309-165704| 30 30 | OCEL.04 14309-165928| 30 30 30 30 30 30| --------------------------------------------------- ------------------------------- c) Preparation at the stations: ------------------------------- The schedule files were provided in form of individual vex-files. The files are individual per station since the lunar lander has slightly different apriori ra/dec coordinates as seen from the different participating stations, since the Moon is in the near field. The vex files are rd1411_ho_update_141028.vex rd1411_ht_update_141028.vex rd1411_ma_update_141028.vex rd1411_kk_update_141028.vex rd1411_ny_update_141028.vex rd1411_ur_update_141028.vex rd1411_wz_update_141028.vex The stations should use their individual vex file, copy it to the name rd1411.vex and then drudg it in order to produce snap-file and procedure-file. The FS version 9.11.6 appears necessary. There might though be some complaints by drudg, however, the resulting snp and prc-files should be correct and working. Stations that do not have FS 9.11.6 can get assistance by Ed Himwich who can provide them with the necessary *.snp and *.prc files. There are three setups in the session, setup01, setup02 and setup03. The first setup is a standard setup usually used for wide-band R1-sessions, while the second setup and third setups are special lunar lander setups. For the latter two, the X-band frequencies are modified in order to correspond to the lunar lander sending frequencies. There are setup02 and setup03 in order to make it possible for stations that do not have automatic gain control, to use special and individual attenuation when observing the lunar lander and natural radio sources in phase-referencing mode. All lunar lander center frequencies are between 8450 MHz and 8496 MH, with bandwidth of 2 to 5 MHz. The data channel with center frequency 8496 MHz is rather strong with an EIRP of about 16 W. The DOR channels are located at 8470 MHz and tones at +/- 19.2 MHz and +/- 3.85 MHz and these channels have an EIRP of about 1 W. Due to the rather strong signals, the received signal strength is on the order of 10-30 dB stronger than normal natural radio sources. Thus, additional attenuation has to be implemented in the lunar lander setup. Stations with Mark4 racks should prepare to add on the order of 10-30 dB, and then monitor and adapt the attenuation correspondingly. This can be done in the beginning of the experiment when the first observations of the lunar lander signals are performed. Only X-band BBC 3 to BBC 8 are used for the lunar lander observations. The X-band frequency distribution is as follows: BBC 1 8212.99 MHz BBC 2 8252.99 MHz BBC 3 8446.99 MHz (DOR - 19.2 MHz, USP) BBC 4 8461.99 MHz (DOR - 3.85 MHz, USP) BBC 5 8465.99 MHz (DOR central tone, USP) BBC 6 8469.99 MHz (DOR + 3.85 MHz, USP) BBC 7 8484.99 MHz (DOR + 19.2 MHz, USP) BBC 8 8491.99 MHz (Data channel, LSP) An approximate summary of the session is given below. The amount of data to be recorded is just less than 1.5 TB per station. The stations should transfer (e- or ship) the data to the Bonn correlator after the session is done. SKED Summary from file /home/mk5_2014/sched/ocel04.skd for experiment OCEL04 (all scans with at least one subnet station) Calculating rise/set times: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 ... done. Average number of obs. per baseline per source(normalized by up-time) = 12.5 Min = 0.0 Max = 180.0 (Baseline Ny-Ma on 1741-038) RMS = 22.3 Total time: 1440 minutes ( 24.0 hours). Key: Ny=NYALES20 Ma=MATERA Ur=URUMQI Ht=HART15M Ho=HOBART26 Kk=KOKEE Wz=WETTZELL Ny Ma Ur Ht Ho Kk Wz Avg % obs. time: 41 47 45 48 32 33 36 40 % cal. time: 5 6 5 6 5 5 6 5 % slew time: 19 31 31 22 49 24 13 28 % idle time: 33 15 17 23 12 36 44 26 total # scans: 460 486 445 507 418 455 508 468 # scans/hour : 19 20 19 21 17 19 21 20 Avg scan (sec): 77 83 88 82 67 63 61 73 # data tracks: 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 Total TBytes: 1.3 1.5 1.4 1.5 1.0 1.0 1.1 1.3 Total TB(M5): 1.1 1.3 1.3 1.3 0.9 0.9 1.0 1.1 # OF OBSERVATIONS BY BASELINE | Ny Ma Ur Ht Ho Kk Wz Total --------------------------------------------- Ny| 318 251 272 32 132 346 1351 Ma| 277 413 51 27 439 1525 Ur| 277 138 120 275 1338 Ht| 119 0 403 1484 Ho| 285 46 671 Kk| 58 622 Wz| 1567 Number of 2-station scans: 460 Number of 3-station scans: 228 Number of 4-station scans: 145 Number of 5-station scans: 189 Number of 6-station scans: 25 Number of 7-station scans: 0 Total number of scans: 1047 Total number of obs: 4279 Total integrated obs-time: 308760 Average obs-time: 72.2 Histogram of observation durations Dur: 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 270 285 300 #Obs: | 2118| 213| 457| 385| 318| 141| 122| 89| 74| 70| 43| 50| 34| 36| 51| 15| 17| 46| Average X-band SNRs by baseline | Ny Ma Ur Ht Ho Kk Wz AVG -------------------------------------------- Ny| 617 583 749 1331 33 811 647 Ma| 445 428 732 29 554 510 Ur| 464 812 415 628 548 Ht| 358 - 615 539 Ho| 394 1084 591 Kk| 37 272 Wz| 636 Average S-band SNRs by baseline | Ny Ma Ur Ht Ho Kk Wz AVG -------------------------------------------- Ny| 335 369 556 1080 22 418 394 Ma| 286 319 594 17 287 311 Ur| 410 770 524 386 419 Ht| 388 - 440 418 Ho| 609 831 639 Kk| 21 387 Wz| 379 ===========================================================