PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-22:28:10
G05     50.4           16.2               10.6 +/-    0.69      25.6 +/-    0.69  0.080 / 0.180
G10     240.5          16.3               17.3 +/-    2.86      41.7 +/-    2.86  0.080 / 0.220
G13     69.3           36.6               13.6 +/-    0.79      21.0 +/-    0.79  0.050 / 0.070
G15     115.4          55.6               16.4 +/-    0.61      19.4 +/-    0.61  0.040 / 0.070
G16     310.6          12.9               10.6 +/-    2.46      27.6 +/-    2.46  0.140 / 0.290
G18     251.9          46.5               14.0 +/-    0.96      18.5 +/-    0.96  0.120 / 0.320
G20     34.1           59.4               13.4 +/-    0.68      15.3 +/-    0.68  0.030 / 0.040
G21     319.5          51.8               14.8 +/-    1.61      18.3 +/-    1.61  0.030 / 0.040
G26     283.5          18.9               11.2 +/-    1.88      25.4 +/-    1.88  0.070 / 0.220
G29     158.4          61.6               16.9 +/-    1.12      18.9 +/-    1.12  0.080 / 0.240