PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-20:42:50
G10     284.3          47.1                9.3 +/-    0.92      12.1 +/-    0.92  0.070 / 0.140
G15     50.2           41.1                9.0 +/-    0.32      12.9 +/-    0.32  0.080 / 0.130
G20     329.1          64.8                8.9 +/-    0.86       9.8 +/-    0.86  0.040 / 0.040
G21     57.9           77.1                9.7 +/-    0.56       9.9 +/-    0.56  0.040 / 0.050
G24     104.4          22.2               11.5 +/-    1.06      24.0 +/-    1.06  0.090 / 0.220
G27     310.4          28.2                8.8 +/-    1.06      16.0 +/-    1.06  0.100 / 0.240
G29     168.6          16.8               11.0 +/-    4.18      26.3 +/-    4.18  0.030 / 0.060
G32     207.0          23.5               12.0 +/-    1.22      24.2 +/-    1.22  0.040 / 0.050