PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-15:42:30
G10     296.7          51.9                5.8 +/-    1.91       7.1 +/-    1.91  0.040 / 0.040
G14     209.7          11.5               -4.8 +/-   15.92     -12.9 +/-   15.92  0.030 / 0.030
G15     46.4           29.9                4.3 +/-    1.19       7.5 +/-    1.19  0.210 / 0.220
G20     350.8          65.4                6.0 +/-    0.41       6.5 +/-    0.41  0.100 / 0.390
G21     99.8           71.5                5.9 +/-    0.66       6.2 +/-    0.66  0.050 / 0.070
G24     93.8           25.7                7.8 +/-    1.11      15.0 +/-    1.11  0.100 / 0.050
G27     303.6          32.2                4.6 +/-    1.13       7.8 +/-    1.13  0.110 / 0.130
G32     210.3          30.2                7.1 +/-    1.60      12.3 +/-    1.60  0.090 / 0.110