PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-10:13:10
G01     107.3          25.3                6.8 +/-    1.44      13.1 +/-    1.44  0.110 / 0.210
G07     107.3          56.5                6.8 +/-    0.85       7.9 +/-    0.85  0.060 / 0.180
G08     41.8           19.0                4.3 +/-    1.93       9.7 +/-    1.93  0.050 / 0.040
G09     173.9          12.8                5.3 +/-    1.70      13.9 +/-    1.70  0.030 / 0.040
G11     88.0           41.3                9.5 +/-    1.60      13.5 +/-    1.60  0.030 / 0.020
G13     311.3          26.7                2.9 +/-    2.62       5.4 +/-    2.62  0.030 / 0.020
G17     205.1          39.8                7.2 +/-    0.96      10.5 +/-    0.96  0.150 / 0.180
G19     208.7          14.1                4.2 +/-    2.58      10.8 +/-    2.58  0.140 / 0.130
G28     318.1          60.9                3.4 +/-    1.73       3.9 +/-    1.73  0.060 / 0.090
G30     16.7           77.2                4.9 +/-    0.97       5.0 +/-    0.97  0.060 / 0.070