PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-22:13:00
G08     318.8          13.1                8.7 +/-    1.84      22.6 +/-    1.84  0.030 / 0.040
G10     308.4          55.2                9.3 +/-    1.49      11.1 +/-    1.49  0.030 / 0.040
G14     212.3          17.5               13.8 +/-    3.29      32.3 +/-    3.29  0.100 / 0.300
G15     46.0           27.0                7.7 +/-    2.23      14.4 +/-    2.23  0.180 / 0.340
G20     9.0            64.5               10.4 +/-    0.70      11.4 +/-    0.70  0.050 / 0.090
G21     114.7          69.2               11.5 +/-    1.11      12.2 +/-    1.11  0.050 / 0.060
G24     87.0           28.1               10.5 +/-    1.61      19.1 +/-    1.61  0.090 / 0.090
G27     293.5          36.1               11.4 +/-    2.90      17.7 +/-    2.90  0.070 / 0.120
G32     213.6          40.0               13.1 +/-    1.67      19.1 +/-    1.67  0.150 / 0.280