PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-03:12:50
G01     251.1          35.3                4.9 +/-    1.27       7.7 +/-    1.27  0.060 / 0.140
G03     316.0          41.5                3.3 +/-    2.21       4.7 +/-    2.21  0.060 / 0.130
G11     235.9          12.9                4.9 +/-    5.43      12.8 +/-    5.43  0.070 / 0.090
G14     61.3           39.7                2.8 +/-    0.49       4.1 +/-    0.49  0.070 / 0.090
G16     165.8          16.2                3.4 +/-    3.11       8.2 +/-    3.11  0.030 / 0.040
G22     305.5          65.2                1.1 +/-    0.56       1.2 +/-    0.56  0.030 / 0.040
G23     285.8          17.8                3.2 +/-    1.35       7.5 +/-    1.35  0.050 / 0.080
G26     141.0          36.4                5.6 +/-    0.92       8.7 +/-    0.92  0.060 / 0.100
G31     40.1           61.9                2.3 +/-    0.80       2.5 +/-    0.80  0.030 / 0.040
G32     75.7           25.8                3.7 +/-    1.46       7.1 +/-    1.46  0.030 / 0.040