PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-09:12:30
G08     298.4          22.8                5.8 +/-    1.01      11.9 +/-    1.01  0.060 / 0.060
G10     358.0          62.5                5.7 +/-    0.81       6.4 +/-    0.81  0.050 / 0.060
G14     225.0          42.3               10.2 +/-    2.10      14.3 +/-    2.10  0.060 / 0.060
G20     57.7           54.9                5.6 +/-    0.80       6.7 +/-    0.80  0.060 / 0.060
G21     143.2          43.6                7.9 +/-    0.86      10.9 +/-    0.86  0.090 / 0.130
G24     60.2           26.8                4.6 +/-    1.91       8.6 +/-    1.91  0.120 / 0.120
G27     262.6          34.3               10.2 +/-    0.83      16.5 +/-    0.83  0.030 / 0.030
G32     234.2          57.4                8.3 +/-    2.01       9.7 +/-    2.01  0.020 / 0.030