PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-07:42:40
G03     229.0          66.6                4.3 +/-    0.68       4.6 +/-    0.68  0.140 / 0.260
G07     250.6          12.4                3.9 +/-    5.51      10.4 +/-    5.51  0.170 / 0.290
G09     304.8          19.8                2.5 +/-    1.68       5.5 +/-    1.68  0.200 / 0.410
G14     101.5          13.1                3.0 +/-    2.56       7.8 +/-    2.56  0.130 / 0.430
G16     119.9          60.3                5.3 +/-    0.46       6.0 +/-    0.46  0.040 / 0.050
G22     194.4          52.2                5.2 +/-    0.68       6.3 +/-    0.68  0.050 / 0.050
G23     325.8          55.5                4.4 +/-    0.62       5.2 +/-    0.62  0.130 / 0.330
G26     64.9           49.9                4.7 +/-    0.60       6.0 +/-    0.60  0.130 / 0.280
G31     54.4           15.8                2.3 +/-    1.14       5.7 +/-    1.14  0.030 / 0.040