PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-07:43:00
G10     296.6          52.1                6.2 +/-    1.70       7.6 +/-    1.70  0.040 / 0.030
G14     209.5          11.2               -4.9 +/-   14.15     -13.4 +/-   14.15  0.040 / 0.030
G15     46.1           28.0                3.8 +/-    1.52       6.9 +/-    1.52  0.080 / 0.060
G20     350.2          65.3                6.3 +/-    0.43       6.9 +/-    0.43  0.050 / 0.050
G21     96.3           72.9                6.5 +/-    1.41       6.7 +/-    1.41  0.220 / 0.380
G24     97.7           25.9                7.0 +/-    1.87      13.4 +/-    1.87  0.110 / 0.530
G27     303.4          32.7                5.4 +/-    1.62       9.0 +/-    1.62  0.060 / 0.100
G32     210.9          25.4                5.5 +/-    2.73      10.6 +/-    2.73  0.050 / 0.080