PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/25-18:13:00
G10     260.0          34.1                8.5 +/-    2.08      13.7 +/-    2.08  0.120 / 0.340
G13     45.5           23.1                8.4 +/-    1.71      17.2 +/-    1.71  0.110 / 0.330
G15     71.9           56.1                9.6 +/-    0.85      11.3 +/-    0.85  0.390 / 0.260
G16     285.7          14.1                8.1 +/-    1.38      20.7 +/-    1.38  0.100 / 0.160
G20     285.3          56.9                8.7 +/-    2.33      10.2 +/-    2.33  0.070 / 0.040
G21     351.3          67.9                9.3 +/-    0.49      10.0 +/-    0.49  0.050 / 0.040
G24     122.8          10.6                9.0 +/-   20.62      24.8 +/-   20.62  0.170 / 0.250
G26     259.4          11.1                9.4 +/-    5.82      25.5 +/-    5.82  0.190 / 0.360
G27     321.8          11.9                5.4 +/-   16.37      14.4 +/-   16.37  0.120 / 0.240
G29     166.6          38.5               10.8 +/-    1.37      16.2 +/-    1.37  0.170 / 0.190