PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-11:28:00
G01     321.1          10.5              -16.6 +/-   18.26     -45.9 +/-   18.26  0.040 / 0.050
G08     270.2          16.8                6.9 +/-    1.78      16.4 +/-    1.78  0.040 / 0.050
G10     64.7           57.8                5.1 +/-    0.73       6.0 +/-    0.73  0.120 / 0.280
G11     311.5          16.8                4.0 +/-    2.27       9.4 +/-    2.27  0.100 / 0.280
G14     267.1          64.5                6.8 +/-    0.80       7.4 +/-    0.80  0.230 / 0.210
G18     311.7          32.5                3.2 +/-    0.92       5.4 +/-    0.92  0.130 / 0.270
G21     154.8          12.9                3.6 +/-    1.88       9.5 +/-    1.88  0.220 / 0.320
G27     229.7          14.2                5.1 +/-    1.94      12.8 +/-    1.94  0.180 / 0.310
G31     176.6          34.0                4.2 +/-    1.16       6.8 +/-    1.16  0.170 / 0.340
G32     350.9          72.5                5.3 +/-    0.41       5.6 +/-    0.41  0.160 / 0.290