PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/15-17:12:40
G01     320.6          12.6                3.9 +/-    3.77      10.3 +/-    3.77  0.200 / 0.170
G08     264.3          16.1                8.1 +/-    1.07      19.7 +/-    1.07  0.280 / 0.280
G10     68.7           56.9                7.9 +/-    0.57       9.2 +/-    0.57  0.050 / 0.100
G11     309.5          18.6                6.1 +/-    1.21      14.0 +/-    1.21  0.040 / 0.100
G14     277.3          68.0                7.1 +/-    0.40       7.6 +/-    0.40  0.150 / 0.240
G18     97.3           31.3                6.9 +/-    1.10      11.8 +/-    1.10  0.150 / 0.260
G27     227.5          12.5                8.7 +/-    3.01      23.0 +/-    3.01  0.030 / 0.020
G31     177.8          34.8                9.0 +/-    1.22      14.4 +/-    1.22  0.020 / 0.020
G32     352.6          71.6                7.3 +/-    0.56       7.7 +/-    0.56  0.040 / 0.040