PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/15-13:27:20
G02     50.1           40.8                2.8 +/-    0.74       4.0 +/-    0.74  0.340 / 0.420
G05     87.3           70.3                5.2 +/-    0.57       5.5 +/-    0.57  0.330 / 0.420
G12     186.5          44.0                5.6 +/-    0.44       7.7 +/-    0.44  0.050 / 0.050
G21     263.7          12.2                1.7 +/-    8.86       4.6 +/-    8.86  0.060 / 0.050
G25     246.1          58.0                4.7 +/-    0.72       5.5 +/-    0.72  0.050 / 0.040
G29     321.9          45.3                3.5 +/-    0.65       4.7 +/-    0.65  0.040 / 0.040