PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-16:12:40
G08     306.7          20.9                4.3 +/-    1.77       9.3 +/-    1.77  0.040 / 0.050
G10     336.0          60.6                5.4 +/-    1.03       6.1 +/-    1.03  0.050 / 0.050
G14     218.6          32.8                7.0 +/-    1.55      11.6 +/-    1.55  0.070 / 0.100
G15     47.2           10.2                5.7 +/-    1.47      15.8 +/-    1.47  0.070 / 0.110
G20     40.5           59.7                7.1 +/-    0.66       8.1 +/-    0.66  0.070 / 0.170
G21     135.7          52.0                8.4 +/-    0.93      10.4 +/-    0.93  0.070 / 0.130
G24     68.1           27.8                6.8 +/-    0.78      12.5 +/-    0.78  0.030 / 0.030
G27     276.3          36.5                6.9 +/-    1.19      10.6 +/-    1.19  0.040 / 0.030
G32     224.3          52.5                7.5 +/-    0.55       9.2 +/-    0.55  0.050 / 0.090