PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-21:58:10
G10     251.4          26.5               13.3 +/-    1.32      25.1 +/-    1.32  0.100 / 0.290
G13     54.0           31.0               12.9 +/-    0.86      22.2 +/-    0.86  0.100 / 0.340
G15     85.6           57.5               14.0 +/-    0.42      16.2 +/-    0.42  0.050 / 0.050
G16     297.8          14.1                9.9 +/-    2.43      25.2 +/-    2.43  0.040 / 0.050
G18     270.4          56.4               13.8 +/-    0.45      16.2 +/-    0.45  0.080 / 0.390
G20     43.7           47.2               11.7 +/-    0.47      15.3 +/-    0.47  0.090 / 0.370
G21     336.1          61.7               13.4 +/-    0.74      15.0 +/-    0.74  0.060 / 0.070
G26     270.2          15.0               12.9 +/-    1.60      32.2 +/-    1.60  0.060 / 0.080
G29     163.5          45.0               13.3 +/-    1.01      17.9 +/-    1.01  0.070 / 0.140