PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-03:28:10
G10     299.9          52.6                5.9 +/-    1.62       7.3 +/-    1.62  0.070 / 0.080
G15     46.1           28.1                3.9 +/-    1.47       7.1 +/-    1.47  0.060 / 0.070
G20     343.8          64.9                6.1 +/-    0.44       6.6 +/-    0.44  0.040 / 0.040
G21     100.2          73.8                7.1 +/-    0.62       7.3 +/-    0.62  0.050 / 0.030
G24     94.7           27.0                5.6 +/-    0.92      10.4 +/-    0.92  0.050 / 0.130
G27     298.5          35.0                6.8 +/-    1.39      10.9 +/-    1.39  0.050 / 0.140
G32     211.0          35.5                7.1 +/-    1.13      11.2 +/-    1.13  0.070 / 0.090