PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/01-20:12:40
G05     52.6           9.5                 6.4 +/-    5.11      18.0 +/-    5.11  0.040 / 0.060
G10     243.5          22.1               11.8 +/-    1.11      24.8 +/-    1.11  0.040 / 0.060
G13     61.7           32.8                7.6 +/-    0.82      12.6 +/-    0.82  0.060 / 0.130
G15     106.2          57.6                9.9 +/-    1.13      11.5 +/-    1.13  0.070 / 0.120
G16     304.0          15.3                5.9 +/-    1.92      14.7 +/-    1.92  0.030 / 0.040
G20     259.8          45.5                9.8 +/-    2.68      13.1 +/-    2.68  0.030 / 0.030
G21     323.6          53.3                9.2 +/-    0.50      11.1 +/-    0.50  0.120 / 0.460
G26     276.6          18.3                8.6 +/-    1.19      19.8 +/-    1.19  0.120 / 0.450
G29     160.2          60.5               10.2 +/-    0.49      11.5 +/-    0.49  0.100 / 0.180