PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/10-13:57:50
G02     34.0           55.1                4.8 +/-    0.87       5.7 +/-    0.87  0.030 / 0.030
G05     143.8          61.0                7.8 +/-    0.38       8.8 +/-    0.38  0.030 / 0.020
G06     52.7           19.3                3.9 +/-    2.60       8.8 +/-    2.60  0.030 / 0.030
G12     203.6          69.1                5.9 +/-    0.52       6.3 +/-    0.52  0.020 / 0.030
G20     198.9          24.7                6.7 +/-    3.35      13.1 +/-    3.35  0.170 / 0.190
G25     296.5          54.1                5.1 +/-    1.27       6.1 +/-    1.27  0.280 / 0.220
G29     310.0          32.7                3.1 +/-    1.36       5.2 +/-    1.36  0.040 / 0.040