PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-09:12:30
G07     22.5           68.7                6.8 +/-    0.44       7.2 +/-    0.44  0.040 / 0.040
G08     59.3           45.6                5.2 +/-    0.91       7.0 +/-    0.91  0.060 / 0.050
G09     175.3          43.4               10.0 +/-    1.34      13.8 +/-    1.34  0.080 / 0.210
G11     127.4          29.1                9.3 +/-    1.06      16.6 +/-    1.06  0.090 / 0.180
G18     112.0          11.2                7.5 +/-    2.74      20.3 +/-    2.74  0.090 / 0.170
G23     160.6          18.5                5.5 +/-    1.36      12.6 +/-    1.36  0.100 / 0.140
G27     40.2           16.6                2.6 +/-    2.10       6.3 +/-    2.10  0.020 / 0.030
G28     260.4          45.9               10.8 +/-    2.75      14.3 +/-    2.75  0.030 / 0.030
G30     320.4          50.7                5.1 +/-    0.60       6.4 +/-    0.60  0.160 / 0.300