PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/08-08:57:40
G01     59.1           30.1                7.3 +/-    1.47      12.8 +/-    1.47  0.030 / 0.040
G06     182.0          13.6                6.9 +/-    1.43      17.8 +/-    1.43  0.030 / 0.040
G07     142.6          20.3                7.3 +/-    1.06      16.0 +/-    1.06  0.160 / 0.160
G11     47.8           22.2                5.2 +/-    1.75      10.8 +/-    1.75  0.080 / 0.180
G13     263.3          34.6               10.2 +/-    1.54      16.4 +/-    1.54  0.150 / 0.220
G15     293.0          16.6                5.8 +/-    1.27      13.8 +/-    1.27  0.110 / 0.200
G17     269.5          78.5               11.1 +/-    0.51      11.3 +/-    0.51  0.030 / 0.020
G19     234.4          53.3               10.3 +/-    2.15      12.5 +/-    2.15  0.030 / 0.020
G28     38.4           56.0                8.2 +/-    1.49       9.7 +/-    1.49  0.050 / 0.080
G30     143.9          51.1               10.0 +/-    0.56      12.5 +/-    0.56  0.060 / 0.080