PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/31-04:27:50
G01     313.4          27.5                4.6 +/-    1.98       8.5 +/-    1.98  0.130 / 0.190
G10     96.7           45.6                5.9 +/-    1.00       7.9 +/-    1.00  0.140 / 0.260
G11     290.4          27.4                4.4 +/-    1.33       8.1 +/-    1.33  0.040 / 0.050
G14     329.7          70.0                6.3 +/-    0.71       6.7 +/-    0.71  0.050 / 0.060
G18     290.2          47.5                6.2 +/-    1.28       8.0 +/-    1.28  0.080 / 0.200
G20     108.3          42.0                9.2 +/-    1.07      12.9 +/-    1.07  0.060 / 0.200
G22     306.5          19.4                9.6 +/-    2.55      21.4 +/-    2.55  0.040 / 0.060
G25     89.7           13.6                4.6 +/-    1.55      11.8 +/-    1.55  0.040 / 0.050
G31     168.9          57.6                7.8 +/-    0.87       9.1 +/-    0.87  0.060 / 0.140
G32     29.1           57.1                4.6 +/-    1.22       5.4 +/-    1.22  0.070 / 0.170