PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-17:43:00
G05     48.4           19.4                8.1 +/-    0.88      18.2 +/-    0.88  0.060 / 0.160
G10     235.8          11.1               -2.1 +/-   44.18      -5.8 +/-   44.18  0.070 / 0.180
G13     78.3           37.4               11.2 +/-    0.74      17.0 +/-    0.74  0.100 / 0.250
G15     123.8          51.8               13.9 +/-    0.77      17.2 +/-    0.77  0.140 / 0.220
G18     245.3          42.7               14.7 +/-    1.80      20.5 +/-    1.80  0.040 / 0.090
G20     25.5           68.1               11.5 +/-    0.42      12.3 +/-    0.42  0.040 / 0.090
G21     314.9          49.1               10.7 +/-    0.79      13.7 +/-    0.79  0.040 / 0.040
G25     198.6          10.4               13.1 +/-   17.02      36.1 +/-   17.02  0.040 / 0.040
G26     292.7          18.9               10.7 +/-    1.75      24.1 +/-    1.75  0.260 / 0.570
G29     151.4          66.2               14.2 +/-    0.85      15.4 +/-    0.85  0.280 / 0.450