PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-20:13:00
G08     318.4          13.2               12.3 +/-    1.40      31.8 +/-    1.40  0.050 / 0.090
G10     308.4          54.8               10.9 +/-    0.67      13.1 +/-    0.67  0.050 / 0.110
G14     212.6          20.0               15.3 +/-    2.07      33.5 +/-    2.07  0.030 / 0.060
G15     45.5           20.7               10.2 +/-    0.45      22.0 +/-    0.45  0.030 / 0.050
G18     17.4           63.8               11.2 +/-    0.65      12.3 +/-    0.65  0.070 / 0.220
G20     76.7           13.8               11.6 +/-    0.65      29.6 +/-    0.65  0.090 / 0.210
G21     118.3          65.1               15.3 +/-    0.72      16.7 +/-    0.72  0.080 / 0.110
G24     90.3           29.1               13.8 +/-    0.78      24.5 +/-    0.78  0.070 / 0.110
G27     289.5          37.5               11.7 +/-    1.13      17.8 +/-    1.13  0.120 / 0.380
G32     215.0          37.4               16.7 +/-    0.58      25.3 +/-    0.58  0.130 / 0.260