PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-21:12:30
G10     285.1          47.4               10.3 +/-    1.06      13.4 +/-    1.06  0.090 / 0.130
G15     50.0           41.0                9.0 +/-    0.48      12.8 +/-    0.48  0.080 / 0.120
G20     330.5          64.9                9.6 +/-    1.18      10.4 +/-    1.18  0.040 / 0.040
G21     59.9           77.1               11.4 +/-    0.50      11.7 +/-    0.50  0.040 / 0.040
G24     104.0          22.5               11.5 +/-    1.76      23.7 +/-    1.76  0.100 / 0.250
G27     309.9          28.7                9.8 +/-    1.46      17.6 +/-    1.46  0.080 / 0.240
G29     168.7          16.3               13.1 +/-    4.33      31.7 +/-    4.33  0.040 / 0.070
G32     207.1          24.2               14.3 +/-    2.83      28.6 +/-    2.83  0.040 / 0.060