PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-15:13:00
G01     318.9          18.2                8.4 +/-    1.85      19.4 +/-    1.85  0.340 / 0.260
G08     259.5          12.9                7.9 +/-    1.84      20.6 +/-    1.84  0.370 / 0.530
G10     80.1           53.4                7.4 +/-    0.76       9.0 +/-    0.76  0.040 / 0.050
G11     305.0          21.4                8.4 +/-    2.08      17.8 +/-    2.08  0.040 / 0.050
G14     294.3          69.8                7.8 +/-    0.52       8.3 +/-    0.52  0.040 / 0.030
G22     301.2          12.1                6.5 +/-    4.21      17.4 +/-    4.21  0.030 / 0.030
G31     175.4          43.1               11.7 +/-    1.07      16.2 +/-    1.07  0.120 / 0.160
G32     9.9            66.7                6.5 +/-    0.57       7.0 +/-    0.57  0.160 / 0.140