PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-04:28:00
G08     270.1          20.0                5.3 +/-    2.49      11.7 +/-    2.49  0.070 / 0.060
G10     50.3           60.8                3.0 +/-    0.64       3.4 +/-    0.64  0.070 / 0.050
G11     312.9          16.4                7.3 +/-    4.37      17.5 +/-    4.37  0.030 / 0.030
G14     259.5          64.9                3.8 +/-    0.42       4.2 +/-    0.42  0.020 / 0.040
G18     86.0           40.8                3.2 +/-    0.62       4.5 +/-    0.62  0.080 / 0.220
G21     153.3          19.9                4.3 +/-    1.99       9.5 +/-    1.99  0.140 / 0.170
G24     42.4           14.8                2.4 +/-    1.57       6.1 +/-    1.57  0.100 / 0.240
G27     233.9          18.6                9.1 +/-    1.94      20.7 +/-    1.94  0.110 / 0.280
G31     179.2          25.6                5.9 +/-    1.72      11.3 +/-    1.72  0.110 / 0.280
G32     316.6          75.6                5.0 +/-    0.56       5.1 +/-    0.56  0.110 / 0.330