PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-10:27:40
G07     331.6          57.4                2.0 +/-    0.66       2.3 +/-    0.66  0.030 / 0.050
G08     102.1          50.2                5.8 +/-    0.62       7.2 +/-    0.62  0.030 / 0.050
G09     186.4          75.3                2.6 +/-    0.53       2.6 +/-    0.53  0.040 / 0.040
G11     146.1          10.7                0.2 +/-   13.88       0.7 +/-   13.88  0.040 / 0.070
G16     45.4           12.3                1.7 +/-    1.88       4.5 +/-    1.88  0.110 / 0.130
G23     154.5          47.6                4.8 +/-    1.10       6.2 +/-    1.10  0.090 / 0.110
G27     58.0           32.6                3.5 +/-    0.89       5.8 +/-    0.89  0.040 / 0.070
G28     234.6          26.8                2.7 +/-    1.81       5.1 +/-    1.81  0.070 / 0.060
G30     297.8          30.9                3.4 +/-    1.64       5.8 +/-    1.64  0.100 / 0.190