PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-02:57:50
G01     319.3          17.3                5.8 +/-    1.72      13.6 +/-    1.72  0.180 / 0.320
G08     256.7          13.6                6.2 +/-    2.70      15.9 +/-    2.70  0.230 / 0.230
G10     78.7           53.4                7.0 +/-    0.60       8.4 +/-    0.60  0.040 / 0.050
G11     303.1          23.3                5.5 +/-    1.84      11.3 +/-    1.84  0.040 / 0.040
G14     291.3          69.8                6.7 +/-    0.58       7.1 +/-    0.58  0.080 / 0.130
G18     305.2          39.9                5.9 +/-    1.87       8.5 +/-    1.87  0.090 / 0.140
G20     85.0           59.3               23.7 +/-    1.10      27.1 +/-    1.10  0.120 / 0.330
G31     174.1          43.1                8.4 +/-    1.43      11.6 +/-    1.43  0.150 / 0.240
G32     10.4           66.8                5.1 +/-    0.90       5.5 +/-    0.90  0.070 / 0.080