PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-18:43:10
G01     319.2          18.1                5.6 +/-    1.32      12.8 +/-    1.32  0.090 / 0.160
G08     255.3          13.2                7.1 +/-    1.17      18.3 +/-    1.17  0.100 / 0.190
G10     80.2           52.5                7.4 +/-    0.84       9.0 +/-    0.84  0.030 / 0.040
G11     301.9          23.9                7.4 +/-    1.93      14.9 +/-    1.93  0.030 / 0.050
G14     298.5          71.1                7.1 +/-    0.77       7.4 +/-    0.77  0.070 / 0.050
G18     302.5          43.2                5.9 +/-    1.11       8.2 +/-    1.11  0.070 / 0.050
G20     105.5          28.9                7.3 +/-    1.27      13.1 +/-    1.27  0.100 / 0.230
G31     179.0          38.9                8.3 +/-    1.70      12.3 +/-    1.70  0.100 / 0.190
G32     5.5            68.0                7.8 +/-    0.83       8.4 +/-    0.83  0.170 / 0.260