PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-22:43:10
G07     329.1          56.4                7.8 +/-    0.44       9.1 +/-    0.44  0.080 / 0.210
G08     106.3          51.5                9.5 +/-    0.59      11.8 +/-    0.59  0.110 / 0.130
G09     200.4          76.9                9.2 +/-    0.22       9.4 +/-    0.22  0.030 / 0.040
G11     149.3          10.8                2.9 +/-   21.70       7.9 +/-   21.70  0.030 / 0.040
G16     46.1           10.0                7.3 +/-    4.28      20.4 +/-    4.28  0.160 / 0.490
G23     154.3          43.0                9.7 +/-    1.75      13.5 +/-    1.75  0.090 / 0.730
G27     56.7           32.2                6.8 +/-    1.04      11.4 +/-    1.04  0.050 / 0.070
G28     235.8          28.3                9.1 +/-    1.96      16.5 +/-    1.96  0.070 / 0.080
G30     302.7          37.2                7.6 +/-    2.00      11.5 +/-    2.00  0.040 / 0.050