PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-18:12:30
G08     290.2          22.8               12.8 +/-    0.62      26.4 +/-    0.62  0.090 / 0.120
G10     13.1           63.2               12.0 +/-    0.56      13.3 +/-    0.56  0.080 / 0.110
G14     233.2          49.4               16.2 +/-    1.94      20.6 +/-    1.94  0.180 / 0.150
G18     69.3           48.0               10.3 +/-    1.16      13.3 +/-    1.16  0.110 / 0.130
G21     146.7          31.7               15.6 +/-    1.06      26.4 +/-    1.06  0.090 / 0.100
G24     54.1           25.0                9.2 +/-    3.88      18.0 +/-    3.88  0.110 / 0.110
G27     249.5          29.7               15.7 +/-    1.69      27.7 +/-    1.69  0.040 / 0.030
G32     252.7          69.4               13.1 +/-    0.49      13.9 +/-    0.49  0.040 / 0.030