PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-03:58:00
G08     294.0          22.8                9.5 +/-    0.64      19.6 +/-    0.64  0.090 / 0.140
G10     6.7            63.0                9.3 +/-    0.60      10.3 +/-    0.60  0.120 / 0.110
G14     229.3          43.4               12.7 +/-    1.55      17.6 +/-    1.55  0.050 / 0.110
G20     47.4           61.2               15.3 +/-    0.43      17.2 +/-    0.43  0.060 / 0.090
G21     146.5          41.6               10.6 +/-    0.94      15.1 +/-    0.94  0.040 / 0.030
G24     55.5           25.0                7.0 +/-    1.77      13.7 +/-    1.77  0.040 / 0.030
G27     254.8          31.8               11.8 +/-    1.52      20.0 +/-    1.52  0.050 / 0.080
G32     247.1          69.4               10.1 +/-    0.85      10.7 +/-    0.85  0.040 / 0.080