PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-16:12:40
G08     318.2          13.8                4.6 +/-    2.77      11.8 +/-    2.77  0.030 / 0.040
G10     309.1          55.5                5.4 +/-    1.42       6.4 +/-    1.42  0.040 / 0.030
G14     212.0          18.8                7.7 +/-    2.12      17.4 +/-    2.12  0.060 / 0.050
G15     45.7           22.9                3.6 +/-    1.94       7.4 +/-    1.94  0.080 / 0.060
G20     9.8            64.4                5.8 +/-    0.79       6.4 +/-    0.79  0.410 / 0.470
G21     117.2          65.8                7.5 +/-    0.96       8.1 +/-    0.96  0.450 / 0.500
G24     84.7           27.7                4.1 +/-    2.09       7.5 +/-    2.09  0.110 / 0.130
G27     294.8          35.3                9.3 +/-    2.41      14.7 +/-    2.41  0.090 / 0.120
G32     214.0          38.2                7.6 +/-    1.46      11.4 +/-    1.46  0.120 / 0.320