PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-00:43:10
G08     269.9          19.8                9.5 +/-    1.95      20.9 +/-    1.95  0.110 / 0.450
G10     51.5           60.6                9.4 +/-    0.61      10.6 +/-    0.61  0.100 / 0.350
G11     313.2          15.7                8.6 +/-    2.32      21.1 +/-    2.32  0.090 / 0.230
G14     260.0          65.0                8.8 +/-    0.67       9.6 +/-    0.67  0.120 / 0.220
G18     87.5           39.1                9.7 +/-    0.95      14.4 +/-    0.95  0.040 / 0.020
G21     153.1          18.0               12.3 +/-    3.21      28.5 +/-    3.21  0.040 / 0.030
G24     42.2           14.5                7.1 +/-    2.53      17.8 +/-    2.53  0.130 / 0.350
G27     233.6          18.3               13.3 +/-    1.38      30.6 +/-    1.38  0.120 / 0.330
G31     180.8          24.1               13.4 +/-    2.31      26.8 +/-    2.31  0.040 / 0.060
G32     309.5          75.0                9.6 +/-    0.90       9.9 +/-    0.90  0.040 / 0.060