PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/29-14:42:30
G02     31.9           56.9                8.2 +/-    0.46       9.6 +/-    0.46  0.040 / 0.040
G05     147.5          59.1               11.1 +/-    0.76      12.7 +/-    0.76  0.030 / 0.040
G06     51.9           20.1                5.3 +/-    1.22      11.6 +/-    1.22  0.100 / 0.240
G12     206.3          70.9                9.6 +/-    1.36      10.1 +/-    1.36  0.090 / 0.210
G20     198.6          23.3                9.8 +/-    1.70      20.0 +/-    1.70  0.020 / 0.050
G25     298.8          53.3                8.6 +/-    0.84      10.4 +/-    0.84  0.030 / 0.040
G29     308.7          31.6                7.3 +/-    1.15      12.3 +/-    1.15  0.060 / 0.150