PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-14:58:00
G10     294.1          51.0                6.2 +/-    0.94       7.7 +/-    0.94  0.040 / 0.040
G14     209.3          9.9                -8.0 +/-    7.65     -22.3 +/-    7.65  0.030 / 0.040
G15     46.7           31.2                4.0 +/-    0.52       6.8 +/-    0.52  0.040 / 0.040
G20     346.4          65.4                4.8 +/-    0.47       5.2 +/-    0.47  0.040 / 0.040
G21     95.5           72.2                7.2 +/-    0.77       7.5 +/-    0.77  0.070 / 0.130
G24     96.1           25.1                8.1 +/-    1.75      15.7 +/-    1.75  0.080 / 0.110
G27     305.5          31.1                5.7 +/-    1.55       9.8 +/-    1.55  0.160 / 0.000
G32     209.7          28.1                6.9 +/-    1.24      12.6 +/-    1.24  0.060 / 0.100