%           mjd     real     imag    sigma  (all in microas)
1984.1  45724.2   -270.33   -142.01     24.90
1984.6  45906.9   -248.89   -103.17     23.65
1985.1  46089.5   -244.85    -82.34     22.20
1985.6  46272.1   -253.45    -75.04     19.94
1986.1  46454.7   -139.35   -192.22     19.86
1986.6  46637.4   -159.48   -170.55     17.16
1987.1  46820.0   -132.93     54.50     16.87
1987.6  47002.6   -143.01     54.17     14.41
1988.1  47185.2   -153.54     47.19     12.53
1988.6  47367.9   -158.63     53.65     10.85
1989.1  47550.5   -146.56     42.63      9.38
1989.6  47733.1   -136.71     34.38      9.10
1990.1  47915.7   -131.04     27.30      6.56
1990.6  48098.4   -118.76     27.71      6.00
1991.1  48281.0   -118.24     28.77      5.18
1991.6  48463.6   -121.04      5.60      4.64
1992.1  48646.2   -113.66     36.92      4.88
1992.6  48828.9   -111.81     27.10      4.59
1993.1  49011.5   -115.29     27.67      4.45
1993.6  49194.1   -115.80     -6.16      3.44
1994.1  49376.7   -110.16     10.27      3.70
1994.6  49559.4   -109.80     10.90      3.52
1995.1  49742.0   -107.90      8.46      3.50
1995.6  49924.6   -107.42     10.55      3.43
1996.1  50107.2    -99.94      9.41      3.37
1996.6  50289.9    -94.62      3.18      3.39
1997.1  50472.5    -83.07     -4.06      3.30
1997.6  50655.1    -69.26    -13.74      3.54
1998.1  50837.7    -49.42    -33.22      3.72
1998.6  51020.4    -33.23    -38.22      3.96
1999.1  51203.0    -27.09    -54.31      3.91
1999.6  51385.6     -7.78    -54.14      3.93
2000.1  51568.2     16.86    -54.90      3.89
2000.6  51750.9     41.13    -48.31      3.81
2001.1  51933.5     49.58    -57.78      3.58
2001.6  52116.1     64.35    -57.01      3.57
2002.1  52298.7     69.53    -48.49      3.71
2002.6  52481.4     87.32    -53.75      3.54
2003.1  52664.0     95.15    -47.55      3.69
2003.6  52846.6    100.10    -45.29      3.72
2004.1  53029.2    127.98    -26.00      3.71
2004.6  53211.9    130.09    -16.54      3.78
2005.1  53394.5    142.44     -2.06      3.83
2005.6  53577.1    143.74     22.37      3.86
2006.1  53759.7    147.91     34.40      3.93
2006.6  53942.4    146.81     52.30      3.77
2007.1  54125.0    143.81     53.70      3.96
2007.6  54307.6    146.55     70.04      4.02
2008.1  54490.2    146.75     81.03      4.09
2008.6  54672.9    144.74     87.92      4.37
2009.1  54855.5    142.36    100.21      4.51
2009.6  55038.1    133.44    145.52      5.25
2010.1  55220.7    131.77    151.60      5.25
2010.6  55403.4    139.07    171.43      5.29
2011.1  55586.0    127.07    162.10      5.00
2011.6  55768.6    127.23    166.94      5.17
2012.1  55951.2    122.73    179.21      4.98
2012.6  56133.9    122.91    164.24      5.32
2013.1  56316.5    119.66    162.82      5.58
2013.6  56499.1    113.14    155.38      5.59
2014.1  56681.7    117.40    153.89      5.33
2014.6  56864.4    118.50    172.27      5.71
2015.1  57047.0    118.56    166.89      5.51
2015.6  57229.6    118.90    165.23      5.58
2016.1  57412.2    121.30    159.61      5.80
2016.6  57594.9    128.86    145.39      6.28
2017.1  57777.5    128.30    145.62      6.61
2017.6  57960.1    123.26    138.38      7.46
2018.1  58142.7    126.56    174.61      7.00