PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-08:43:10
G07     359.1          65.4                5.5 +/-    0.56       6.0 +/-    0.56  0.060 / 0.060
G08     72.2           50.2                5.5 +/-    1.36       6.9 +/-    1.36  0.070 / 0.050
G09     175.8          53.7                7.2 +/-    0.80       8.7 +/-    0.80  0.210 / 0.130
G11     135.0          22.9                5.0 +/-    1.66      10.3 +/-    1.66  0.170 / 0.080
G23     159.5          28.0                5.0 +/-    1.82       9.1 +/-    1.82  0.070 / 0.110
G27     44.8           23.8                4.3 +/-    1.81       8.6 +/-    1.81  0.070 / 0.130
G28     249.6          39.4                6.0 +/-    1.18       8.8 +/-    1.18  0.030 / 0.030
G30     312.3          43.5                4.1 +/-    1.43       5.7 +/-    1.43  0.020 / 0.030