PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-20:12:40
G05     47.3           23.3               13.7 +/-    0.93      27.8 +/-    0.93  0.050 / 0.080
G13     81.9           37.5               16.2 +/-    0.42      24.5 +/-    0.42  0.040 / 0.080
G15     129.0          49.9               17.4 +/-    1.15      22.0 +/-    1.15  0.090 / 0.180
G18     242.7          39.8               18.2 +/-    2.18      26.5 +/-    2.18  0.090 / 0.230
G20     25.0           69.4               15.3 +/-    0.53      16.3 +/-    0.53  0.140 / 0.370
G21     311.0          46.2               15.0 +/-    1.19      19.9 +/-    1.19  0.220 / 0.340
G25     198.8          11.7               17.8 +/-    2.72      47.8 +/-    2.72  0.080 / 0.130
G26     294.5          19.1               14.4 +/-    1.05      32.3 +/-    1.05  0.070 / 0.150
G29     150.3          71.2               17.2 +/-    0.77      18.1 +/-    0.77  0.040 / 0.110