PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-03:43:10
G08     273.8          19.4                7.0 +/-    1.60      15.7 +/-    1.60  0.380 / 0.290
G10     56.4           58.5                6.1 +/-    0.94       7.0 +/-    0.94  0.130 / 0.520
G14     257.8          63.7                8.0 +/-    0.70       8.8 +/-    0.70  0.020 / 0.030
G18     314.1          29.6                6.6 +/-    1.39      11.7 +/-    1.39  0.030 / 0.030
G20     91.7           39.3                7.8 +/-    1.02      11.4 +/-    1.02  0.110 / 0.280
G21     154.6          19.5                5.9 +/-    1.97      13.2 +/-    1.97  0.130 / 0.320
G24     41.5           12.7                5.1 +/-    2.59      13.4 +/-    2.59  0.050 / 0.060
G27     235.1          18.8                8.8 +/-    5.61      19.9 +/-    5.61  0.050 / 0.060
G31     178.0          27.6                8.5 +/-    2.66      15.8 +/-    2.66  0.080 / 0.120
G32     318.3          75.6                7.0 +/-    0.57       7.2 +/-    0.57  0.080 / 0.160