PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/01-02:57:50
G01     319.0          19.2                5.2 +/-    1.58      11.7 +/-    1.58  0.040 / 0.050
G08     261.2          13.5                9.2 +/-    2.50      23.8 +/-    2.50  0.040 / 0.050
G10     80.6           51.7                7.1 +/-    0.63       8.7 +/-    0.63  0.090 / 0.150
G11     303.6          22.4                6.2 +/-    1.19      13.0 +/-    1.19  0.120 / 0.260
G14     293.2          70.3                6.2 +/-    0.62       6.5 +/-    0.62  0.120 / 0.330
G18     304.5          41.1                6.3 +/-    1.50       8.9 +/-    1.50  0.130 / 0.350
G20     105.5          29.3                7.9 +/-    1.01      14.0 +/-    1.01  0.080 / 0.070
G31     174.4          43.0                9.2 +/-    1.03      12.8 +/-    1.03  0.060 / 0.080
G32     5.2            68.2                5.5 +/-    0.86       5.9 +/-    0.86  0.020 / 0.020