PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-23:57:40
G08     270.3          20.0                7.1 +/-    1.66      15.5 +/-    1.66  0.240 / 0.250
G10     53.0           59.8                8.1 +/-    0.67       9.2 +/-    0.67  0.200 / 0.300
G14     256.6          62.8                8.0 +/-    0.77       8.9 +/-    0.77  0.040 / 0.050
G18     314.2          28.9                5.8 +/-    1.55      10.3 +/-    1.55  0.050 / 0.040
G20     90.8           39.7                7.3 +/-    0.90      10.8 +/-    0.90  0.560 / 0.300
G21     153.9          19.6                8.4 +/-    3.58      18.7 +/-    3.58  0.110 / 0.330
G24     40.5           11.1                7.0 +/-    2.59      19.0 +/-    2.59  0.200 / 0.200
G27     236.3          19.2                9.3 +/-    4.66      20.8 +/-    4.66  0.120 / 0.340
G31     178.9          26.2               10.6 +/-    2.67      20.1 +/-    2.67  0.120 / 0.330
G32     326.2          75.9                8.1 +/-    0.71       8.4 +/-    0.71  0.120 / 0.320