PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-17:43:00
G10     264.2          35.8               12.4 +/-    0.86      19.4 +/-    0.86  0.140 / 0.130
G13     43.7           21.4               10.6 +/-    1.27      22.5 +/-    1.27  0.090 / 0.140
G15     61.1           49.5               11.8 +/-    1.00      15.0 +/-    1.00  0.030 / 0.030
G16     287.1          11.6               12.0 +/-    2.61      32.4 +/-    2.61  0.040 / 0.030
G18     298.1          64.4               11.9 +/-    0.71      13.0 +/-    0.71  0.210 / 0.300
G20     51.9           38.2               11.0 +/-    1.14      16.5 +/-    1.14  0.140 / 0.230
G21     9.1            72.1               13.0 +/-    0.38      13.6 +/-    0.38  0.050 / 0.080
G24     123.5          12.4               15.7 +/-    2.60      41.5 +/-    2.60  0.050 / 0.080
G27     319.0          18.2               11.3 +/-    1.90      26.0 +/-    1.90  0.130 / 0.190
G29     165.3          28.5               15.8 +/-    1.35      28.5 +/-    1.35  0.080 / 0.260