PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/08-08:42:40
G03     228.9          66.9                4.3 +/-    0.38       4.6 +/-    0.38  0.040 / 0.050
G07     250.2          12.4                4.5 +/-    2.91      11.9 +/-    2.91  0.040 / 0.050
G09     304.3          19.1                3.8 +/-    2.40       8.5 +/-    2.40  0.040 / 0.050
G14     101.1          13.2                3.4 +/-    3.79       8.8 +/-    3.79  0.040 / 0.050
G16     122.2          59.9                6.6 +/-    0.41       7.5 +/-    0.41  0.180 / 0.280
G22     194.0          52.5                6.1 +/-    1.86       7.4 +/-    1.86  0.130 / 0.280
G23     324.8          54.6                4.1 +/-    0.60       4.9 +/-    0.60  0.120 / 0.400
G26     66.1           50.4                5.5 +/-    1.23       6.9 +/-    1.23  0.110 / 0.380
G31     54.0           16.4                2.4 +/-    0.92       5.8 +/-    0.92  0.040 / 0.040