PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-04:27:50
G08     271.9          19.8               10.0 +/-    1.61      22.2 +/-    1.61  0.510 / 0.290
G10     52.3           60.0                6.4 +/-    0.79       7.3 +/-    0.79  0.090 / 0.380
G14     254.9          60.9                9.1 +/-    0.71      10.3 +/-    0.71  0.140 / 0.220
G18     314.6          27.6                6.3 +/-    2.11      11.7 +/-    2.11  0.160 / 0.260
G20     80.0           52.7               11.7 +/-    1.25      14.2 +/-    1.25  0.170 / 0.200
G21     154.1          20.7                7.2 +/-    1.90      15.5 +/-    1.90  0.210 / 0.210
G24     41.2           12.4                5.4 +/-    2.50      14.2 +/-    2.50  0.050 / 0.050
G27     235.4          19.0               10.8 +/-    5.26      24.2 +/-    5.26  0.050 / 0.060
G31     177.7          27.4                9.9 +/-    1.55      18.2 +/-    1.55  0.120 / 0.280
G32     329.1          75.9                8.4 +/-    0.48       8.7 +/-    0.48  0.130 / 0.280