PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-23:42:40
G02     241.6          76.4               12.3 +/-    0.35      12.6 +/-    0.35  0.050 / 0.040
G05     170.9          16.7               23.1 +/-    1.74      55.2 +/-    1.74  0.050 / 0.050
G06     40.8           58.1               11.7 +/-    0.49      13.6 +/-    0.49  0.180 / 0.320
G12     321.7          52.1               12.3 +/-    0.66      15.2 +/-    0.66  0.170 / 0.260
G17     69.1           25.4               12.1 +/-    1.64      23.4 +/-    1.64  0.100 / 0.120
G19     55.8           40.0               12.1 +/-    1.52      17.6 +/-    1.52  0.140 / 0.130
G24     245.4          35.0               15.4 +/-    1.70      24.5 +/-    1.70  0.060 / 0.040
G25     316.6          11.3               -7.4 +/-   31.48     -20.1 +/-   31.48  0.060 / 0.060