PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-07:43:10
G08     282.1          21.3                5.6 +/-    1.56      11.9 +/-    1.56  0.040 / 0.080
G10     36.2           62.1                5.1 +/-    0.41       5.7 +/-    0.41  0.040 / 0.080
G14     242.6          53.0                6.2 +/-    1.14       7.6 +/-    1.14  0.080 / 0.130
G18     316.8          20.4                4.1 +/-    2.15       8.9 +/-    2.15  0.100 / 0.170
G20     91.0           30.3                4.3 +/-    0.66       7.5 +/-    0.66  0.100 / 0.140
G21     151.9          27.7                5.9 +/-    1.97      10.9 +/-    1.97  0.090 / 0.200
G24     45.7           18.2                2.3 +/-    0.81       5.4 +/-    0.81  0.030 / 0.030
G27     241.3          23.9                5.5 +/-    0.95      11.1 +/-    0.95  0.020 / 0.030
G31     179.4          19.9                5.4 +/-    1.88      11.9 +/-    1.88  0.080 / 0.260
G32     293.8          76.7                6.1 +/-    0.49       6.2 +/-    0.49  0.080 / 0.230