PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/27-12:27:50
G08     284.7          23.5                5.7 +/-    2.01      11.5 +/-    2.01  0.070 / 0.120
G10     24.7           62.5                3.0 +/-    1.12       3.3 +/-    1.12  0.070 / 0.130
G14     236.6          53.5                7.8 +/-    2.15       9.5 +/-    2.15  0.030 / 0.030
G18     317.2          18.8                3.5 +/-    1.19       8.0 +/-    1.19  0.030 / 0.030
G20     74.9           48.1                6.2 +/-    0.60       8.0 +/-    0.60  0.070 / 0.070
G21     148.9          29.4                5.9 +/-    1.39      10.4 +/-    1.39  0.070 / 0.100
G24     48.8           20.3                3.7 +/-    2.59       8.0 +/-    2.59  0.040 / 0.030
G27     249.8          28.3                6.5 +/-    1.54      11.9 +/-    1.54  0.030 / 0.020
G31     184.1          10.2               -6.2 +/-    3.27     -17.3 +/-    3.27  0.150 / 0.210
G32     257.0          69.4                6.7 +/-    0.66       7.1 +/-    0.66  0.090 / 0.180