PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-03:43:10
G08     271.0          19.8                7.5 +/-    1.73      16.6 +/-    1.73  0.090 / 0.270
G10     53.3           59.9                4.4 +/-    0.63       5.0 +/-    0.63  0.110 / 0.270
G14     256.0          61.7                5.5 +/-    0.71       6.2 +/-    0.71  0.040 / 0.060
G18     314.4          28.1                6.1 +/-    2.10      11.1 +/-    2.10  0.040 / 0.060
G20     73.6           57.9                7.9 +/-    0.44       9.1 +/-    0.44  0.130 / 0.180
G21     154.2          20.3                5.4 +/-    1.53      11.8 +/-    1.53  0.230 / 0.210
G24     40.9           11.9                5.7 +/-    0.89      15.3 +/-    0.89  0.020 / 0.030
G27     235.1          18.8                7.9 +/-    1.35      17.8 +/-    1.35  0.030 / 0.030
G31     177.6          27.8                5.6 +/-    1.50      10.3 +/-    1.50  0.140 / 0.200
G32     330.9          75.7                6.2 +/-    0.58       6.4 +/-    0.58  0.080 / 0.250