PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-21:57:40
G10     259.7          33.7               12.3 +/-    0.93      20.0 +/-    0.93  0.130 / 0.240
G13     45.7           23.3                9.6 +/-    1.66      19.4 +/-    1.66  0.100 / 0.210
G15     73.2           56.8               10.4 +/-    0.47      12.2 +/-    0.47  0.040 / 0.050
G16     283.9          14.5                9.7 +/-    2.84      24.3 +/-    2.84  0.060 / 0.080
G20     259.8          19.8                5.7 +/-    1.17      12.7 +/-    1.17  0.140 / 0.370
G21     345.8          66.4                8.5 +/-    0.73       9.2 +/-    0.73  0.130 / 0.330
G24     124.4          10.3               -7.8 +/-   45.08     -21.8 +/-   45.08  0.070 / 0.220
G26     257.2          11.2               14.1 +/-    2.39      38.3 +/-    2.39  0.080 / 0.260
G27     321.4          12.8                7.9 +/-    2.37      20.7 +/-    2.37  0.160 / 0.350
G29     167.4          40.2               13.1 +/-    1.38      19.0 +/-    1.38  0.150 / 0.370