PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/24-22:57:30
G10     245.3          23.7               13.9 +/-    0.88      28.0 +/-    0.88  0.040 / 0.050
G13     59.1           31.9                9.8 +/-    1.10      16.6 +/-    1.10  0.040 / 0.050
G15     98.9           57.7               13.7 +/-    0.83      15.9 +/-    0.83  0.060 / 0.130
G16     302.5          15.2                7.8 +/-    1.67      19.3 +/-    1.67  0.080 / 0.100
G20     261.9          46.1               12.4 +/-    2.99      16.5 +/-    2.99  0.030 / 0.040
G21     326.2          55.1               11.9 +/-    0.64      14.1 +/-    0.64  0.030 / 0.030
G26     274.6          17.6               11.0 +/-    2.31      25.6 +/-    2.31  0.110 / 0.420
G29     160.8          56.7               14.0 +/-    0.91      16.4 +/-    0.91  0.140 / 0.370