PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-08:13:10
G07     48.5           69.4                6.3 +/-    0.40       6.7 +/-    0.40  0.030 / 0.030
G08     51.0           39.4                4.7 +/-    0.83       7.0 +/-    0.83  0.030 / 0.030
G09     174.1          33.2                8.5 +/-    1.44      14.0 +/-    1.44  0.040 / 0.030
G11     119.0          34.3                8.2 +/-    1.08      13.2 +/-    1.08  0.040 / 0.040
G17     198.9          14.4                4.6 +/-    3.53      11.6 +/-    3.53  0.070 / 0.380
G18     104.2          15.6                5.5 +/-    2.53      13.6 +/-    2.53  0.100 / 0.290
G23     161.1          10.8                4.1 +/-    2.05      11.2 +/-    2.05  0.310 / 0.350
G27     37.7           10.0                3.2 +/-    2.87       9.0 +/-    2.87  0.240 / 0.400
G28     271.7          50.9                6.7 +/-    2.72       8.4 +/-    2.72  0.110 / 0.250
G30     328.4          57.4                4.6 +/-    0.40       5.4 +/-    0.40  0.140 / 0.250