PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-12:12:30
G01     107.0          25.4                5.0 +/-    1.13       9.6 +/-    1.13  0.200 / 0.280
G07     108.0          55.7                6.6 +/-    0.67       7.8 +/-    0.67  0.210 / 0.440
G08     41.8           18.7                4.8 +/-    1.47      10.8 +/-    1.47  0.030 / 0.040
G09     173.1          11.6                6.2 +/-    1.32      16.6 +/-    1.32  0.030 / 0.040
G11     86.9           40.9                4.2 +/-    1.43       6.1 +/-    1.43  0.080 / 0.140
G13     311.3          26.7                3.9 +/-    1.51       7.3 +/-    1.51  0.080 / 0.130
G17     205.1          40.2                8.3 +/-    0.54      12.1 +/-    0.54  0.110 / 0.110
G19     208.8          14.4                4.2 +/-    2.21      10.5 +/-    2.21  0.130 / 0.120
G28     318.2          60.9                4.3 +/-    0.64       4.8 +/-    0.64  0.030 / 0.030
G30     14.3           77.0                5.4 +/-    0.79       5.5 +/-    0.79  0.020 / 0.030