PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-00:13:00
G08     318.4          13.4                7.7 +/-    1.72      19.9 +/-    1.72  0.060 / 0.090
G10     309.0          55.3                8.0 +/-    0.96       9.5 +/-    0.96  0.050 / 0.090
G14     212.5          17.6               10.5 +/-    1.81      24.5 +/-    1.81  0.030 / 0.040
G15     45.8           24.9                7.7 +/-    0.89      15.1 +/-    0.89  0.030 / 0.050
G20     302.1          50.0                6.8 +/-    0.63       8.5 +/-    0.63  0.080 / 0.300
G21     114.6          70.0                9.7 +/-    0.68      10.2 +/-    0.68  0.110 / 0.400
G24     87.4           28.4                8.4 +/-    0.57      15.2 +/-    0.57  0.080 / 0.130
G27     292.1          36.6                8.6 +/-    0.65      13.3 +/-    0.65  0.080 / 0.130
G32     213.8          41.2               10.5 +/-    1.01      14.9 +/-    1.01  0.120 / 0.290