PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-22:57:40
G10     288.5          49.5               10.4 +/-    0.97      13.2 +/-    0.97  0.060 / 0.110
G15     47.9           34.7                7.0 +/-    0.77      11.2 +/-    0.77  0.060 / 0.100
G20     335.6          65.0                7.8 +/-    0.51       8.5 +/-    0.51  0.050 / 0.060
G21     64.0           77.3               10.9 +/-    0.52      11.2 +/-    0.52  0.050 / 0.050
G24     106.3          23.5                9.5 +/-    1.19      19.2 +/-    1.19  0.040 / 0.040
G27     308.1          30.4                9.7 +/-    1.16      16.8 +/-    1.16  0.040 / 0.040
G29     167.9          14.2               11.7 +/-    1.07      29.6 +/-    1.07  0.080 / 0.200
G32     207.7          24.5               11.5 +/-    0.96      22.7 +/-    0.96  0.090 / 0.200