PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-04:27:50
G05     50.0           13.4                1.0 +/-    0.98       2.7 +/-    0.98  0.130 / 0.240
G10     237.9          14.2                9.0 +/-    4.79      22.9 +/-    4.79  0.090 / 0.250
G13     72.7           36.3                4.8 +/-    0.64       7.5 +/-    0.64  0.080 / 0.190
G15     119.8          53.8                7.4 +/-    0.62       8.9 +/-    0.62  0.080 / 0.140
G16     311.2          13.6                5.8 +/-    2.31      14.8 +/-    2.31  0.170 / 0.370
G20     263.1          60.5                8.0 +/-    0.61       9.0 +/-    0.61  0.230 / 0.390
G21     315.3          48.4                5.7 +/-    0.96       7.3 +/-    0.96  0.040 / 0.080
G26     283.3          20.5                6.3 +/-    1.39      13.7 +/-    1.39  0.040 / 0.060
G29     158.1          70.0                8.1 +/-    1.64       8.6 +/-    1.64  0.060 / 0.120