PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-23:43:00
G10     251.4          28.9               11.8 +/-    1.48      21.2 +/-    1.48  0.050 / 0.040
G13     52.1           28.3                6.6 +/-    2.31      11.9 +/-    2.31  0.040 / 0.060
G15     83.5           57.0               10.0 +/-    0.84      11.7 +/-    0.84  0.070 / 0.110
G16     295.5          15.4                6.6 +/-    1.41      16.3 +/-    1.41  0.080 / 0.120
G20     271.2          51.1               10.4 +/-    3.11      12.9 +/-    3.11  0.070 / 0.190
G21     334.8          60.3                8.3 +/-    0.66       9.4 +/-    0.66  0.090 / 0.220
G26     267.7          15.1                8.9 +/-    1.17      22.0 +/-    1.17  0.030 / 0.040
G29     163.3          48.2               10.2 +/-    0.77      13.2 +/-    0.77  0.030 / 0.040