PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-21:43:00
G10     265.3          38.5               11.7 +/-    1.13      17.5 +/-    1.13  0.070 / 0.050
G13     42.4           18.7                7.4 +/-    1.48      16.7 +/-    1.48  0.050 / 0.050
G15     61.8           50.7               10.3 +/-    0.78      12.9 +/-    0.78  0.130 / 0.340
G16     280.8          13.2                9.6 +/-    1.83      24.9 +/-    1.83  0.160 / 0.370
G20     294.8          59.6                9.6 +/-    0.65      11.0 +/-    0.65  0.120 / 0.180
G21     356.6          69.9                9.4 +/-    0.42       9.9 +/-    0.42  0.120 / 0.170
G24     123.4          12.9                9.7 +/-    2.49      25.5 +/-    2.49  0.080 / 0.260
G27     319.8          16.8                7.1 +/-    1.55      16.9 +/-    1.55  0.080 / 0.220
G29     166.8          33.6               10.4 +/-    0.96      17.0 +/-    0.96  0.110 / 0.380