PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-19:57:40
G10     261.1          34.8                9.8 +/-    1.21      15.6 +/-    1.21  0.100 / 0.210
G13     44.8           22.3                8.6 +/-    1.43      17.9 +/-    1.43  0.100 / 0.180
G15     71.5           56.5                9.2 +/-    0.41      10.8 +/-    0.41  0.140 / 0.430
G16     284.0          13.9                3.5 +/-    1.56       8.8 +/-    1.56  0.110 / 0.360
G20     287.2          57.5               10.9 +/-    1.25      12.6 +/-    1.25  0.060 / 0.050
G21     351.7          68.3                9.9 +/-    0.89      10.6 +/-    0.89  0.050 / 0.050
G24     122.4          11.2               11.6 +/-    2.57      31.5 +/-    2.57  0.100 / 0.360
G26     257.7          10.5                8.4 +/-    2.11      23.2 +/-    2.11  0.100 / 0.370
G27     321.3          13.2                8.3 +/-    3.20      21.6 +/-    3.20  0.070 / 0.270
G29     167.1          37.7               11.3 +/-    1.50      17.1 +/-    1.50  0.080 / 0.320