PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-15:12:40
G08     320.1          11.9                3.1 +/-    1.51       8.3 +/-    1.51  0.040 / 0.040
G10     304.3          54.2                6.4 +/-    1.11       7.7 +/-    1.11  0.030 / 0.030
G14     211.0          16.1                7.8 +/-    2.21      18.8 +/-    2.21  0.040 / 0.050
G15     45.8           25.2                4.4 +/-    0.89       8.6 +/-    0.89  0.040 / 0.040
G20     2.8            64.9                5.8 +/-    0.60       6.3 +/-    0.60  0.100 / 0.130
G21     112.0          67.5                7.6 +/-    0.99       8.1 +/-    0.99  0.100 / 0.150
G24     88.7           27.2                9.2 +/-    0.64      17.1 +/-    0.64  0.230 / 0.260
G27     298.6          34.2                6.9 +/-    0.96      11.1 +/-    0.96  0.140 / 0.220
G32     212.5          34.7                9.1 +/-    1.50      14.5 +/-    1.50  0.070 / 0.080