PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-21:57:40
G10     250.4          28.1               12.2 +/-    0.98      22.3 +/-    0.98  0.180 / 0.660
G13     53.1           28.9                6.8 +/-    0.75      12.3 +/-    0.75  0.150 / 0.730
G15     86.9           57.7                9.1 +/-    0.38      10.6 +/-    0.38  0.040 / 0.050
G16     296.1          15.6               10.4 +/-    3.54      25.6 +/-    3.54  0.040 / 0.050
G20     270.0          50.7               10.1 +/-    0.97      12.7 +/-    0.97  0.080 / 0.110
G21     333.0          59.3                9.5 +/-    0.77      10.9 +/-    0.77  0.080 / 0.130
G26     268.5          15.6               12.1 +/-    3.50      29.7 +/-    3.50  0.070 / 0.180
G29     163.3          50.2               10.6 +/-    0.39      13.3 +/-    0.39  0.050 / 0.150