PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-20:43:10
G10     284.9          47.3                9.8 +/-    2.79      12.8 +/-    2.79  0.030 / 0.040
G15     50.0           40.7                8.5 +/-    0.98      12.2 +/-    0.98  0.040 / 0.040
G20     330.2          64.9               10.3 +/-    0.60      11.3 +/-    0.60  0.090 / 0.100
G21     60.0           77.1               10.7 +/-    0.21      10.9 +/-    0.21  0.080 / 0.110
G24     104.0          22.5               10.6 +/-    1.22      22.0 +/-    1.22  0.100 / 0.170
G27     310.1          28.5                8.4 +/-    1.19      15.1 +/-    1.19  0.080 / 0.170
G29     168.6          16.4               11.1 +/-    2.09      26.8 +/-    2.09  0.060 / 0.060
G32     207.1          23.9               12.0 +/-    1.18      24.1 +/-    1.18  0.050 / 0.070