PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-18:28:00
G02     290.5          80.5               12.9 +/-    0.77      13.0 +/-    0.77  0.090 / 0.150
G05     170.7          24.4               23.6 +/-    2.17      46.7 +/-    2.17  0.080 / 0.160
G06     40.6           46.1                8.7 +/-    0.80      11.5 +/-    0.80  0.030 / 0.050
G12     317.9          65.7               10.2 +/-    1.89      11.0 +/-    1.89  0.020 / 0.050
G17     82.8           12.5               11.0 +/-    1.75      29.0 +/-    1.75  0.080 / 0.140
G19     71.0           29.2               10.5 +/-    0.61      18.7 +/-    0.61  0.080 / 0.180
G24     235.0          27.5               16.3 +/-    1.31      30.1 +/-    1.31  0.100 / 0.290
G25     317.6          27.7                9.6 +/-    1.41      17.6 +/-    1.41  0.090 / 0.360