PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-22:57:30
G10     295.3          50.6               12.2 +/-    1.00      15.3 +/-    1.00  0.040 / 0.050
G14     209.8          12.6               22.7 +/-    5.74      59.7 +/-    5.74  0.040 / 0.040
G15     46.3           29.5               10.4 +/-    0.82      18.5 +/-    0.82  0.070 / 0.140
G18     356.0          66.2               11.1 +/-    0.81      12.0 +/-    0.81  0.070 / 0.140
G20     71.0           18.2               11.3 +/-    2.05      26.1 +/-    2.05  0.070 / 0.160
G21     96.2           73.4               13.7 +/-    0.90      14.3 +/-    0.90  0.080 / 0.130
G24     100.0          26.2               15.6 +/-    0.56      29.7 +/-    0.56  0.070 / 0.180
G27     299.6          34.8               12.8 +/-    0.71      20.3 +/-    0.71  0.070 / 0.200
G32     211.1          28.7               16.2 +/-    2.30      29.2 +/-    2.30  0.060 / 0.090