PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-15:27:50
G02     29.7           58.7                8.8 +/-    0.34      10.1 +/-    0.34  0.040 / 0.040
G05     150.8          57.0               10.1 +/-    0.58      11.8 +/-    0.58  0.030 / 0.040
G06     51.1           21.0                5.3 +/-    1.33      11.4 +/-    1.33  0.030 / 0.040
G12     209.5          72.6                7.9 +/-    1.16       8.3 +/-    1.16  0.030 / 0.040
G19     97.6           10.9                8.2 +/-    1.77      22.5 +/-    1.77  0.090 / 0.210
G20     198.2          21.8                8.7 +/-    1.46      18.2 +/-    1.46  0.090 / 0.220
G25     300.9          52.4                9.8 +/-    1.05      12.0 +/-    1.05  0.050 / 0.050
G29     307.0          29.6                7.3 +/-    1.12      12.8 +/-    1.12  0.060 / 0.060