PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-17:57:50
G10     265.4          36.6               12.3 +/-    1.38      19.0 +/-    1.38  0.110 / 0.180
G13     43.1           20.5                9.0 +/-    1.29      19.5 +/-    1.29  0.110 / 0.280
G15     59.8           48.7               10.6 +/-    0.72      13.6 +/-    0.72  0.050 / 0.100
G16     286.1          11.3                9.4 +/-    1.46      25.5 +/-    1.46  0.050 / 0.110
G18     300.7          64.8                9.2 +/-    0.62      10.1 +/-    0.62  0.040 / 0.060
G20     52.8           37.2                8.7 +/-    0.51      13.2 +/-    0.51  0.030 / 0.050
G21     11.9           72.7               11.7 +/-    1.08      12.2 +/-    1.08  0.110 / 0.310
G24     122.6          13.2               14.2 +/-    1.71      36.8 +/-    1.71  0.150 / 0.320
G27     318.5          19.1                7.7 +/-    2.06      17.3 +/-    2.06  0.090 / 0.310
G29     165.4          27.1               14.3 +/-    1.04      26.6 +/-    1.04  0.100 / 0.210