PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-04:28:10
G08     279.2          21.7                9.6 +/-    1.70      20.3 +/-    1.70  0.070 / 0.270
G10     37.9           61.9                7.8 +/-    0.62       8.7 +/-    0.62  0.090 / 0.220
G14     244.2          55.5               10.2 +/-    0.85      12.1 +/-    0.85  0.040 / 0.070
G18     316.6          21.5                7.4 +/-    4.49      15.7 +/-    4.49  0.040 / 0.080
G20     72.1           54.6               13.7 +/-    0.54      16.4 +/-    0.54  0.030 / 0.030
G21     152.3          27.5               10.2 +/-    1.88      18.8 +/-    1.88  0.030 / 0.040
G24     44.9           17.2                6.3 +/-    0.85      14.8 +/-    0.85  0.070 / 0.130
G27     241.1          23.6               10.0 +/-    1.85      20.2 +/-    1.85  0.080 / 0.140
G31     179.2          20.5                8.5 +/-    2.04      18.4 +/-    2.04  0.090 / 0.130
G32     297.0          76.8                8.6 +/-    0.61       8.8 +/-    0.61  0.070 / 0.130