PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-17:57:40
G08     309.3          19.0                6.6 +/-    1.01      14.9 +/-    1.01  0.080 / 0.090
G10     331.3          59.8                7.9 +/-    0.49       8.9 +/-    0.49  0.060 / 0.060
G14     218.4          31.4                9.7 +/-    3.30      16.5 +/-    3.30  0.060 / 0.060
G18     42.0           58.2                8.6 +/-    0.74       9.9 +/-    0.74  0.070 / 0.080
G21     134.4          51.1               10.3 +/-    0.85      12.8 +/-    0.85  0.080 / 0.170
G24     74.9           30.5                8.5 +/-    0.83      14.6 +/-    0.83  0.100 / 0.130
G27     272.8          37.5                9.3 +/-    2.35      14.1 +/-    2.35  0.050 / 0.050
G32     223.8          51.5               12.6 +/-    1.70      15.6 +/-    1.70  0.040 / 0.050