PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-16:12:50
G10     262.4          34.7                6.4 +/-    1.80      10.2 +/-    1.80  0.140 / 0.210
G13     44.7           22.6                4.7 +/-    2.51       9.6 +/-    2.51  0.160 / 0.220
G15     63.1           50.5                6.3 +/-    0.82       7.9 +/-    0.82  0.240 / 0.250
G16     287.7          12.3                7.1 +/-    1.81      18.8 +/-    1.81  0.290 / 0.290
G18     295.0          64.0                6.8 +/-    0.80       7.5 +/-    0.80  0.060 / 0.090
G20     50.1           40.4                4.7 +/-    0.99       6.8 +/-    0.99  0.060 / 0.070
G21     8.0            71.5                6.0 +/-    0.73       6.2 +/-    0.73  0.210 / 0.450
G24     124.9          11.4                1.6 +/-   27.50       4.3 +/-   27.50  0.180 / 0.410
G27     319.8          16.6                6.3 +/-    2.89      15.0 +/-    2.89  0.040 / 0.020
G29     165.5          31.4                7.0 +/-    0.93      11.9 +/-    0.93  0.040 / 0.030