PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-19:27:50
G10     254.3          31.3               12.6 +/-    1.94      21.5 +/-    1.94  0.040 / 0.050
G13     49.5           26.2                8.3 +/-    2.01      15.8 +/-    2.01  0.050 / 0.050
G15     78.4           56.6                9.2 +/-    0.52      10.8 +/-    0.52  0.100 / 0.200
G16     291.1          15.6                8.6 +/-    1.60      21.0 +/-    1.60  0.150 / 0.210
G20     277.2          54.3               10.4 +/-    3.02      12.5 +/-    3.02  0.040 / 0.040
G21     338.7          62.3               10.0 +/-    0.46      11.1 +/-    0.46  0.030 / 0.040
G26     264.3          13.8                8.2 +/-    1.85      21.0 +/-    1.85  0.110 / 0.480
G29     164.9          46.1               10.4 +/-    1.35      13.8 +/-    1.35  0.130 / 0.370