PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/18-00:27:50
G01     303.8          35.2                8.1 +/-    0.98      12.8 +/-    0.98  0.050 / 0.130
G10     109.4          38.3                7.3 +/-    0.74      11.0 +/-    0.74  0.060 / 0.130
G11     276.9          28.9                7.3 +/-    0.96      13.1 +/-    0.96  0.100 / 0.230
G14     7.1            64.6                6.6 +/-    0.84       7.2 +/-    0.84  0.090 / 0.230
G18     119.5          11.4                6.7 +/-    2.17      18.1 +/-    2.17  0.050 / 0.100
G22     310.5          27.7                5.6 +/-    1.24      10.3 +/-    1.24  0.050 / 0.090
G25     76.7           17.2                6.9 +/-    1.21      16.3 +/-    1.21  0.030 / 0.040
G31     171.5          65.8                8.7 +/-    0.80       9.5 +/-    0.80  0.050 / 0.050
G32     36.6           52.4                7.5 +/-    0.34       9.2 +/-    0.34  0.040 / 0.040