PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-00:12:30
G08     304.8          19.7                6.2 +/-    0.98      13.8 +/-    0.98  0.120 / 0.130
G10     355.6          62.4                6.6 +/-    0.79       7.3 +/-    0.79  0.090 / 0.130
G14     223.5          38.4               11.7 +/-    1.72      17.4 +/-    1.72  0.050 / 0.060
G20     55.0           55.7                9.3 +/-    0.66      11.1 +/-    0.66  0.050 / 0.060
G21     142.7          48.5               11.6 +/-    0.52      15.0 +/-    0.52  0.120 / 0.250
G24     64.0           28.7                9.2 +/-    1.49      16.5 +/-    1.49  0.110 / 0.290
G27     263.0          35.2               10.9 +/-    2.19      17.2 +/-    2.19  0.070 / 0.050
G32     233.1          61.3                9.5 +/-    1.15      10.7 +/-    1.15  0.070 / 0.040