PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-23:57:40
G08     306.3          20.7                9.1 +/-    1.33      19.7 +/-    1.33  0.040 / 0.090
G10     334.4          60.3                8.1 +/-    0.66       9.2 +/-    0.66  0.050 / 0.080
G14     219.4          34.5               12.2 +/-    0.39      19.5 +/-    0.39  0.030 / 0.060
G18     41.7           58.6                9.7 +/-    0.91      11.1 +/-    0.91  0.030 / 0.040
G21     135.9          53.6               11.6 +/-    0.41      14.0 +/-    0.41  0.050 / 0.080
G24     73.0           30.5               10.1 +/-    0.57      17.5 +/-    0.57  0.060 / 0.070
G27     270.0          37.2               11.0 +/-    1.21      16.8 +/-    1.21  0.030 / 0.040
G32     225.5          51.6               10.5 +/-    1.90      13.0 +/-    1.90  0.020 / 0.030