PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-17:12:40
G02     64.1           28.8                9.7 +/-    0.42      17.4 +/-    0.42  0.080 / 0.240
G05     53.8           59.6               10.2 +/-    0.83      11.6 +/-    0.83  0.090 / 0.280
G12     184.7          27.6               11.9 +/-    2.16      21.9 +/-    2.16  0.030 / 0.030
G13     125.6          18.7               13.4 +/-    1.54      30.4 +/-    1.54  0.020 / 0.040
G15     160.5          16.4               15.3 +/-    2.37      36.8 +/-    2.37  0.070 / 0.130
G20     211.4          65.6               13.3 +/-    0.41      14.5 +/-    0.41  0.050 / 0.110
G21     276.3          22.5               11.3 +/-    1.98      23.3 +/-    1.98  0.040 / 0.050
G25     226.7          47.2               13.5 +/-    1.18      17.7 +/-    1.18  0.030 / 0.050
G29     337.8          64.8               10.6 +/-    0.72      11.5 +/-    0.72  0.130 / 0.430