%           mjd     real     imag    sigma  (all in microas)
1979.9  44203.2   -359.65     63.82    125.49
1980.4  44385.8   -335.54    -11.26    104.91
1980.9  44568.5   -259.63   -109.90     82.65
1981.4  44751.1   -163.34    -66.60     60.86
1981.9  44933.7   -147.21    -88.17     56.44
1982.4  45116.3   -212.21    -88.54     50.77
1982.9  45299.0   -288.61   -119.12     40.18
1983.4  45481.6   -298.16   -143.60     35.90
1983.9  45664.2   -288.66   -176.55     31.14
1984.4  45846.8   -284.27   -158.14     29.25
1984.9  46029.5   -290.88   -148.97     27.31
1985.4  46212.1   -255.86   -124.23     25.70
1985.9  46394.7   -253.29   -129.13     25.06
1986.4  46577.3   -175.87   -125.78     20.70
1986.9  46760.0   -146.84    -45.10     16.14
1987.4  46942.6   -149.72    -43.35     14.15
1987.9  47125.2   -151.20    -48.43     12.84
1988.4  47307.8   -143.05    -15.01     11.56
1988.9  47490.5   -146.22     -5.40     10.51
1989.4  47673.1   -140.58     14.40      9.68
1989.9  47855.7   -139.19     11.95      9.14
1990.4  48038.3   -132.61     22.89      8.77
1990.9  48221.0   -124.59     22.78      7.71
1991.4  48403.6   -117.81     20.81      7.32
1991.9  48586.2   -114.41     27.70      7.00
1992.4  48768.8   -110.56     17.94      6.68
1992.9  48951.5   -105.42     23.15      6.34
1993.4  49134.1   -118.72     22.04      5.78
1993.9  49316.7   -113.58     23.12      5.55
1994.4  49499.3   -116.65     24.38      5.45
1994.9  49682.0   -114.19     22.41      5.28
1995.4  49864.6   -109.20     19.71      5.11
1995.9  50047.2   -101.58     15.86      4.98
1996.4  50229.8    -91.15      4.33      4.92
1996.9  50412.5    -79.99     -2.14      4.95
1997.4  50595.1    -73.21    -10.65      4.83
1997.9  50777.7    -50.24    -27.92      5.07
1998.4  50960.3    -40.37    -39.05      5.08
1998.9  51143.0    -32.96    -63.04      4.94
1999.4  51325.6    -11.82    -62.66      4.87
1999.9  51508.2      5.41    -63.94      4.68
2000.4  51690.8     35.04    -64.05      4.55
2000.9  51873.5     39.25    -61.66      4.46
2001.4  52056.1     51.98    -64.85      4.27
2001.9  52238.7     67.15    -53.42      4.33
2002.4  52421.3     77.32    -66.29      4.12
2002.9  52604.0     98.39    -57.11      4.07
2003.4  52786.6     94.76    -43.54      4.14
2003.9  52969.2    115.33    -39.89      4.07
2004.4  53151.8    121.86    -12.35      4.13
2004.9  53334.5    132.02     -2.14      4.10
2005.4  53517.1    143.12     29.10      3.84
2005.9  53699.7    145.16     46.03      3.84
2006.4  53882.3    148.62     61.61      3.67
2006.9  54065.0    138.22     72.53      3.65
2007.4  54247.6    135.94     79.84      3.74
2007.9  54430.2    133.04    101.31      3.71
2008.4  54612.8    128.63    123.24      3.83
2008.9  54795.5    128.79    133.89      3.84
2009.4  54978.1    123.25    157.45      3.81
2009.9  55160.7    121.17    162.34      3.79
2010.4  55343.3    126.02    170.07      3.75
2010.9  55526.0    131.59    169.09      3.55
2011.4  55708.6    129.57    177.85      3.52
2011.9  55891.2    122.89    180.89      3.49
2012.4  56073.8    121.19    172.30      3.57
2012.9  56256.5    112.13    166.34      3.57
2013.4  56439.1    110.58    160.78      3.58
2013.9  56621.7    117.17    156.88      3.49
2014.4  56804.3    120.98    159.39      3.39
2014.9  56987.0    125.24    160.02      3.37
2015.4  57169.6    125.23    151.89      3.40
2015.9  57352.2    128.57    151.11      3.41
2016.4  57534.8    127.02    143.86      3.37
2016.9  57717.5    128.09    143.67      3.46
2017.4  57900.1    124.44    142.95      3.57
2017.9  58082.7    119.85    148.57      3.84
2018.4  58265.3    117.75    145.06      4.09
2018.9  58448.0    118.59    145.97      4.35
2019.4  58630.6    117.73    158.41      4.61