PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-18:43:00
G02     54.0           37.8                8.5 +/-    1.03      12.9 +/-    1.03  0.190 / 0.380
G05     67.3           65.7                8.8 +/-    0.20       9.6 +/-    0.20  0.160 / 0.350
G12     185.3          38.4               11.8 +/-    1.75      17.6 +/-    1.75  0.060 / 0.120
G13     130.4          11.7                9.9 +/-   14.70      26.6 +/-   14.70  0.090 / 0.110
G21     267.5          13.4               13.7 +/-    2.49      35.4 +/-    2.49  0.030 / 0.040
G25     246.2          55.1               10.1 +/-    0.83      12.0 +/-    0.83  0.040 / 0.050
G29     325.5          49.9               10.5 +/-    1.01      13.2 +/-    1.01  0.090 / 0.440