%           mjd     real     imag    sigma  (all in microas)
1989.0  47529.3   -168.94     84.17     17.28
1989.5  47711.9   -165.20     79.08     16.27
1990.0  47894.5   -146.87     91.56     15.15
1990.5  48077.1   -123.00     75.69     13.46
1991.0  48259.8   -127.27     73.57     12.22
1991.5  48442.4   -130.20     50.45     11.38
1992.0  48625.0   -129.76     57.59     10.39
1992.5  48807.6   -122.24     40.85      9.82
1993.0  48990.3   -104.06     38.92      9.41
1993.5  49172.9   -108.21     39.58      8.72
1994.0  49355.5   -101.41     36.16      8.48
1994.5  49538.1   -103.36     34.27      8.60
1995.0  49720.8   -100.93     33.02      8.40
1995.5  49903.4   -102.09     30.95      8.12
1996.0  50086.0    -96.57     27.09      7.51
1996.5  50268.6    -84.31     23.33      7.42
1997.0  50451.3    -77.68     11.05      7.21
1997.5  50633.9    -64.83      3.31      7.45
1998.0  50816.5    -52.09    -23.92      7.97
1998.5  50999.1    -40.47    -28.53      7.85
1999.0  51181.8    -42.40    -57.48      7.48
1999.5  51364.4    -15.53    -38.82      7.34
2000.0  51547.0     11.11    -36.46      6.82
2000.5  51729.6     57.00    -44.11      6.41
2001.0  51912.3     59.77    -31.45      6.28
2001.5  52094.9     73.76    -38.30      5.90
2002.0  52277.5     93.19    -15.38      6.17
2002.5  52460.1    101.23    -13.77      5.78
2003.0  52642.8    132.01     -9.95      5.46
2003.5  52825.4    131.23      0.19      5.44
2004.0  53008.0    152.53     -4.41      5.19
2004.5  53190.6    150.54     18.97      5.09
2005.0  53373.3    153.39     31.00      4.92
2005.5  53555.9    159.67     48.90      4.69
2006.0  53738.5    167.48     60.63      4.68
2006.5  53921.1    172.79     72.86      4.53
2007.0  54103.8    160.97     83.73      4.65
2007.5  54286.4    165.61     88.93      4.84
2008.0  54469.0    165.47    104.35      5.02
2008.5  54651.6    165.54    124.95      5.36
2009.0  54834.3    165.81    140.48      5.41
2009.5  55016.9    170.50    147.11      5.59
2010.0  55199.5    167.42    155.72      5.68
2010.5  55382.1    167.68    157.35      5.83
2011.0  55564.8    151.86    175.26      5.48
2011.5  55747.4    141.08    184.28      5.81
2012.0  55930.0    142.09    199.86      6.11
2012.5  56112.6    142.12    199.41      6.66
2013.0  56295.3    138.98    205.07      7.30
2013.5  56477.9    145.46    214.47      7.70
2014.0  56660.5    159.56    218.84      8.73
2014.5  56843.1    167.17    227.47      8.80