PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-23:12:50
G10     267.3          37.6               13.6 +/-    1.25      20.5 +/-    1.25  0.100 / 0.070
G13     42.4           19.6               11.7 +/-    2.71      26.0 +/-    2.71  0.050 / 0.050
G15     59.5           49.3               14.6 +/-    0.86      18.6 +/-    0.86  0.140 / 0.300
G16     281.3          11.2               12.0 +/-    1.88      32.8 +/-    1.88  0.150 / 0.340
G18     300.9          64.3               13.2 +/-    0.52      14.5 +/-    0.52  0.040 / 0.040
G20     55.3           33.7               11.6 +/-    1.53      18.8 +/-    1.53  0.040 / 0.030
G21     6.2            72.6               13.5 +/-    0.64      14.1 +/-    0.64  0.040 / 0.050
G24     121.1          14.1               18.6 +/-    1.84      47.2 +/-    1.84  0.040 / 0.040
G27     317.5          20.7               12.1 +/-    2.91      26.2 +/-    2.91  0.050 / 0.100
G29     166.7          27.5               16.1 +/-    1.05      29.8 +/-    1.05  0.060 / 0.120