PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-15:43:10
G10     264.1          35.8               10.2 +/-    1.10      15.9 +/-    1.10  0.250 / 0.140
G13     43.7           21.4                5.8 +/-    2.19      12.3 +/-    2.19  0.100 / 0.120
G15     61.0           49.3                8.8 +/-    0.61      11.1 +/-    0.61  0.220 / 0.250
G16     285.7          12.0                7.2 +/-    8.17      19.3 +/-    8.17  0.190 / 0.290
G18     298.9          64.7                9.1 +/-    0.79      10.0 +/-    0.79  0.050 / 0.080
G20     51.1           39.4                7.3 +/-    1.59      10.7 +/-    1.59  0.080 / 0.070
G21     13.1           72.4                8.6 +/-    0.73       8.9 +/-    0.73  0.320 / 0.240
G24     123.5          12.4               13.4 +/-    2.70      35.6 +/-    2.70  0.190 / 0.200
G27     319.1          17.9                8.3 +/-    1.73      19.2 +/-    1.73  0.210 / 0.440
G29     165.9          30.0               11.6 +/-    1.50      20.3 +/-    1.50  0.270 / 0.380