PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-08:12:50
G08     272.6          18.8                5.7 +/-    2.03      13.0 +/-    2.03  0.040 / 0.050
G10     55.7           59.6                4.7 +/-    0.85       5.3 +/-    0.85  0.050 / 0.060
G14     256.2          60.1                6.0 +/-    0.86       6.8 +/-    0.86  0.150 / 0.170
G18     314.0          28.6                3.6 +/-    1.43       6.6 +/-    1.43  0.110 / 0.180
G20     99.6           23.1                5.0 +/-    1.73      10.2 +/-    1.73  0.130 / 0.240
G21     154.3          18.4                6.3 +/-    2.13      14.4 +/-    2.13  0.090 / 0.120
G24     40.7           11.7                3.2 +/-    2.23       8.7 +/-    2.23  0.110 / 0.140
G27     233.6          17.6                4.7 +/-    3.86      11.0 +/-    3.86  0.100 / 0.150
G31     177.3          29.3                4.0 +/-    1.86       7.2 +/-    1.86  0.360 / 0.300
G32     336.1          75.1                5.9 +/-    0.35       6.1 +/-    0.35  0.140 / 0.380