PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/05-14:57:40
G01     110.6          23.6               13.9 +/-    1.78      28.0 +/-    1.78  0.100 / 0.190
G07     100.8          61.0               12.3 +/-    0.87      13.8 +/-    0.87  0.100 / 0.160
G08     42.3           23.4                9.8 +/-    1.37      20.0 +/-    1.37  0.040 / 0.030
G09     174.7          15.8               10.0 +/-    1.56      24.3 +/-    1.56  0.030 / 0.030
G11     93.6           42.4               12.7 +/-    0.84      17.7 +/-    0.84  0.090 / 0.110
G13     312.2          26.4                8.8 +/-    1.69      16.6 +/-    1.69  0.080 / 0.070
G17     204.6          33.6               12.2 +/-    1.68      19.9 +/-    1.68  0.160 / 0.290
G18     84.1           23.6               11.3 +/-    2.28      22.8 +/-    2.28  0.180 / 0.330
G28     310.6          60.2                9.4 +/-    1.11      10.7 +/-    1.11  0.050 / 0.130
G30     7.4            75.7               11.7 +/-    0.48      12.0 +/-    0.48  0.170 / 0.240