PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-11:12:40
G08     285.6          23.4                5.6 +/-    1.33      11.3 +/-    1.33  0.070 / 0.110
G10     23.6           62.6                3.2 +/-    1.16       3.5 +/-    1.16  0.070 / 0.100
G14     235.9          53.0                7.2 +/-    2.01       8.8 +/-    2.01  0.050 / 0.020
G18     317.4          17.8                2.6 +/-    1.94       6.0 +/-    1.94  0.030 / 0.030
G20     74.2           48.4                5.6 +/-    0.84       7.1 +/-    0.84  0.080 / 0.090
G21     148.9          30.9                6.0 +/-    1.13      10.4 +/-    1.13  0.070 / 0.080
G24     49.5           21.0                3.8 +/-    2.19       8.1 +/-    2.19  0.140 / 0.240
G27     250.1          28.6                7.0 +/-    2.38      12.6 +/-    2.38  0.200 / 0.230
G31     183.8          10.3               -5.4 +/-    9.14     -15.0 +/-    9.14  0.050 / 0.020
G32     254.5          68.3                5.5 +/-    0.52       5.8 +/-    0.52  0.040 / 0.030