PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-02:42:40
G08     273.2          21.0                9.9 +/-    1.73      21.2 +/-    1.73  0.030 / 0.020
G10     44.0           61.6               10.0 +/-    0.36      11.2 +/-    0.36  0.030 / 0.030
G11     314.8          13.9                7.2 +/-    2.76      18.4 +/-    2.76  0.040 / 0.050
G14     253.4          62.7               10.9 +/-    1.26      12.1 +/-    1.26  0.050 / 0.060
G18     83.2           42.1               10.7 +/-    0.64      15.1 +/-    0.64  0.090 / 0.270
G21     152.5          22.4               10.1 +/-    3.46      21.1 +/-    3.46  0.080 / 0.230
G24     44.1           16.9                8.4 +/-    1.57      20.1 +/-    1.57  0.080 / 0.160
G27     236.4          20.6               12.7 +/-    1.88      27.6 +/-    1.88  0.070 / 0.130
G31     180.5          21.7               12.1 +/-    1.88      25.6 +/-    1.88  0.090 / 0.270
G32     299.5          75.4               11.0 +/-    0.77      11.3 +/-    0.77  0.120 / 0.220