PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-16:42:50
G02     210.0          47.9               13.6 +/-    1.21      17.6 +/-    1.21  0.050 / 0.130
G06     101.8          79.6               11.3 +/-    0.92      11.5 +/-    0.92  0.060 / 0.130
G12     315.5          28.2               11.0 +/-    1.47      20.0 +/-    1.47  0.070 / 0.090
G17     51.7           36.1                9.0 +/-    0.83      14.0 +/-    0.83  0.070 / 0.080
G19     30.9           53.8               11.2 +/-    1.07      13.6 +/-    1.07  0.040 / 0.080
G24     280.8          41.8                9.1 +/-    1.33      12.9 +/-    1.33  0.040 / 0.090
G28     116.4          20.1               11.1 +/-    1.06      24.3 +/-    1.06  0.040 / 0.030