PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-21:42:40
G08     311.0          18.7                8.5 +/-    1.73      19.4 +/-    1.73  0.080 / 0.090
G10     326.8          59.2                7.9 +/-    0.93       9.0 +/-    0.93  0.080 / 0.090
G14     216.5          27.5               10.5 +/-    0.75      19.4 +/-    0.75  0.100 / 0.200
G15     46.4           17.2                7.1 +/-    1.08      16.8 +/-    1.08  0.100 / 0.210
G20     31.7           61.6                9.4 +/-    0.41      10.5 +/-    0.41  0.040 / 0.050
G21     131.1          59.6               11.1 +/-    0.41      12.7 +/-    0.41  0.040 / 0.050
G24     74.5           28.9                9.8 +/-    0.90      17.6 +/-    0.90  0.080 / 0.110
G27     280.4          37.3                9.7 +/-    0.95      14.8 +/-    0.95  0.080 / 0.110
G32     220.5          50.3               12.6 +/-    0.88      15.9 +/-    0.88  0.150 / 0.230