PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/16-14:27:50
G02     54.1           36.9                5.8 +/-    1.84       8.9 +/-    1.84  0.020 / 0.020
G05     76.2           68.1                7.1 +/-    0.45       7.6 +/-    0.45  0.030 / 0.020
G12     188.1          42.2                9.1 +/-    0.93      12.8 +/-    0.93  0.150 / 0.330
G13     135.5          9.8                -6.4 +/-   13.47     -17.9 +/-   13.47  0.330 / 0.470
G20     204.9          49.8                9.4 +/-    1.05      11.9 +/-    1.05  0.070 / 0.060
G21     266.2          15.8                9.6 +/-    1.14      23.4 +/-    1.14  0.060 / 0.060
G25     248.5          56.4                6.6 +/-    2.15       7.7 +/-    2.15  0.030 / 0.060
G29     327.4          52.5                5.0 +/-    0.58       6.2 +/-    0.58  0.040 / 0.040