PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-22:28:00
G08     286.1          23.2               12.7 +/-    1.05      25.9 +/-    1.05  0.100 / 0.130
G10     18.3           63.2               11.9 +/-    0.75      13.2 +/-    0.75  0.080 / 0.120
G14     236.2          52.7               13.3 +/-    1.47      16.2 +/-    1.47  0.060 / 0.110
G18     71.1           47.7               11.3 +/-    0.32      14.7 +/-    0.32  0.050 / 0.140
G21     148.2          32.0               13.6 +/-    1.63      22.8 +/-    1.63  0.090 / 0.110
G24     52.2           23.9               10.4 +/-    0.65      20.7 +/-    0.65  0.090 / 0.110
G27     246.8          28.2               13.8 +/-    1.27      25.0 +/-    1.27  0.020 / 0.030
G32     256.0          69.1               13.5 +/-    0.52      14.3 +/-    0.52  0.030 / 0.030