PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-09:58:00
G08     273.3          20.8                6.8 +/-    1.42      14.7 +/-    1.42  0.030 / 0.030
G10     49.9           59.9                6.3 +/-    0.73       7.2 +/-    0.73  0.030 / 0.030
G14     253.6          62.8                6.7 +/-    0.62       7.5 +/-    0.62  0.110 / 0.300
G18     314.8          28.2                4.4 +/-    1.67       7.9 +/-    1.67  0.120 / 0.250
G20     88.8           40.8                6.7 +/-    0.69       9.6 +/-    0.69  0.020 / 0.020
G21     153.1          19.9                5.2 +/-    1.88      11.4 +/-    1.88  0.030 / 0.030
G24     42.1           13.5                3.2 +/-    2.93       8.2 +/-    2.93  0.050 / 0.050
G27     238.6          20.9                7.7 +/-    1.88      16.5 +/-    1.88  0.050 / 0.050
G31     180.3          22.7                7.7 +/-    2.14      15.8 +/-    2.14  0.130 / 0.230
G32     290.0          73.8                6.5 +/-    0.45       6.8 +/-    0.45  0.100 / 0.230