PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-14:42:40
G02     63.7           28.7                6.3 +/-    0.96      11.3 +/-    0.96  0.020 / 0.050
G05     54.1           58.9                7.8 +/-    0.74       8.9 +/-    0.74  0.030 / 0.040
G12     185.3          29.3                9.1 +/-    2.27      16.2 +/-    2.27  0.060 / 0.080
G13     126.3          17.9               11.7 +/-    1.29      27.2 +/-    1.29  0.090 / 0.110
G15     160.6          15.8               11.5 +/-    2.00      28.0 +/-    2.00  0.060 / 0.050
G20     211.3          63.0               11.2 +/-    0.60      12.4 +/-    0.60  0.040 / 0.040
G21     276.1          23.3                7.8 +/-    1.36      15.9 +/-    1.36  0.080 / 0.220
G25     229.8          48.5                9.4 +/-    0.46      12.0 +/-    0.46  0.070 / 0.170
G29     336.9          63.8                5.8 +/-    0.62       6.4 +/-    0.62  0.100 / 0.350