PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-19:58:00
G05     50.0           16.3               13.3 +/-    0.95      32.1 +/-    0.95  0.120 / 0.290
G10     239.4          15.1               17.6 +/-    1.22      43.8 +/-    1.22  0.100 / 0.180
G13     71.3           36.9               16.6 +/-    0.82      25.5 +/-    0.82  0.040 / 0.050
G15     116.0          54.8               16.7 +/-    0.99      20.0 +/-    0.99  0.060 / 0.060
G16     313.4          11.6                9.5 +/-   11.28      25.6 +/-   11.28  0.100 / 0.190
G18     250.5          46.2               15.9 +/-    4.13      21.1 +/-    4.13  0.100 / 0.190
G20     31.8           61.9               15.1 +/-    0.62      16.8 +/-    0.62  0.170 / 0.180
G21     319.1          51.6               14.1 +/-    0.98      17.4 +/-    0.98  0.110 / 0.190
G26     286.8          18.7               13.1 +/-    1.19      29.7 +/-    1.19  0.040 / 0.030
G29     156.4          61.7               17.4 +/-    0.75      19.4 +/-    0.75  0.050 / 0.040