PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-21:43:10
G10     281.7          45.9               12.4 +/-    1.13      16.4 +/-    1.13  0.070 / 0.140
G15     51.7           43.8               10.3 +/-    0.71      14.1 +/-    0.71  0.080 / 0.110
G20     324.2          64.5               10.0 +/-    0.44      10.9 +/-    0.44  0.050 / 0.050
G21     46.7           77.1               12.8 +/-    0.70      13.1 +/-    0.70  0.050 / 0.050
G24     106.8          21.3               13.5 +/-    0.63      28.7 +/-    0.63  0.030 / 0.050
G27     311.8          27.1               10.2 +/-    1.46      19.0 +/-    1.46  0.030 / 0.040
G29     168.7          19.0               14.8 +/-    0.83      33.4 +/-    0.83  0.100 / 0.140
G32     206.4          21.8               14.4 +/-    1.05      30.4 +/-    1.05  0.090 / 0.150