PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-08:12:50
G07     19.8           68.4                6.0 +/-    0.73       6.4 +/-    0.73  0.030 / 0.030
G08     60.5           46.1                5.2 +/-    0.86       6.8 +/-    0.86  0.030 / 0.030
G09     174.7          43.9                7.8 +/-    1.10      10.7 +/-    1.10  0.050 / 0.040
G11     128.3          28.4                6.6 +/-    2.20      11.9 +/-    2.20  0.040 / 0.040
G18     112.7          10.6                2.9 +/-   13.05       7.9 +/-   13.05  0.150 / 0.210
G23     160.7          20.0                5.7 +/-    2.31      12.5 +/-    2.31  0.240 / 0.190
G27     40.7           17.8                2.8 +/-    1.89       6.5 +/-    1.89  0.120 / 0.220
G28     258.8          45.0                6.8 +/-    3.10       9.1 +/-    3.10  0.150 / 0.170
G30     319.3          49.7                3.4 +/-    0.88       4.4 +/-    0.88  0.150 / 0.300