PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-16:28:00
G10     263.6          35.5                8.5 +/-    0.95      13.4 +/-    0.95  0.240 / 0.130
G13     44.0           21.8                6.2 +/-    1.70      13.0 +/-    1.70  0.110 / 0.100
G15     61.6           49.7                7.8 +/-    0.66       9.9 +/-    0.66  0.070 / 0.080
G16     286.7          12.0                8.2 +/-    2.55      22.0 +/-    2.55  0.060 / 0.080
G18     297.5          64.4                8.5 +/-    0.80       9.3 +/-    0.80  0.240 / 0.280
G20     51.1           39.4                7.1 +/-    1.55      10.4 +/-    1.55  0.180 / 0.270
G21     10.8           72.1                8.0 +/-    0.77       8.3 +/-    0.77  0.240 / 0.210
G24     124.0          12.1               10.9 +/-    3.01      29.0 +/-    3.01  0.170 / 0.210
G27     319.3          17.6                6.6 +/-    1.55      15.5 +/-    1.55  0.040 / 0.030
G29     165.6          30.0               10.3 +/-    1.01      18.0 +/-    1.01  0.040 / 0.030