PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-17:12:30
G10     286.2          48.0                8.2 +/-    0.73      10.6 +/-    0.73  0.100 / 0.090
G15     48.8           37.5                6.7 +/-    0.53      10.2 +/-    0.53  0.080 / 0.110
G20     332.6          65.0                7.3 +/-    1.23       8.0 +/-    1.23  0.080 / 0.200
G21     70.9           75.9                9.9 +/-    0.88      10.2 +/-    0.88  0.080 / 0.240
G24     101.7          22.8               10.0 +/-    1.95      20.6 +/-    1.95  0.040 / 0.040
G27     310.0          28.4                8.6 +/-    1.74      15.6 +/-    1.74  0.040 / 0.050
G29     167.9          14.5               11.4 +/-    2.61      28.6 +/-    2.61  0.110 / 0.290
G32     207.6          23.7               10.4 +/-    2.53      20.9 +/-    2.53  0.150 / 0.290