PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-21:43:10
G08     313.6          17.2                6.6 +/-    2.40      15.6 +/-    2.40  0.040 / 0.040
G10     320.9          58.1                7.7 +/-    0.45       8.8 +/-    0.45  0.050 / 0.040
G14     215.0          24.4               10.9 +/-    2.22      21.6 +/-    2.22  0.080 / 0.070
G15     46.0           20.0                6.9 +/-    2.35      15.2 +/-    2.35  0.100 / 0.060
G20     25.1           62.7                8.1 +/-    0.98       9.0 +/-    0.98  0.240 / 0.390
G21     127.0          62.7               10.1 +/-    0.81      11.2 +/-    0.81  0.220 / 0.350
G24     78.3           29.0                8.8 +/-    1.89      15.8 +/-    1.89  0.070 / 0.290
G27     284.6          37.2                7.9 +/-    1.07      12.0 +/-    1.07  0.110 / 0.160
G32     218.1          47.1                9.5 +/-    1.09      12.5 +/-    1.09  0.160 / 0.220