PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/06-17:27:20
G02     53.5           38.1                9.4 +/-    0.46      14.0 +/-    0.46  0.240 / 0.380
G05     69.6           66.8                9.3 +/-    0.52      10.0 +/-    0.52  0.150 / 0.390
G12     184.9          38.6               10.2 +/-    2.03      15.2 +/-    2.03  0.050 / 0.070
G13     130.8          11.3               -1.6 +/-   27.92      -4.3 +/-   27.92  0.040 / 0.060
G21     267.0          13.0                7.5 +/-   12.86      19.5 +/-   12.86  0.120 / 0.380
G25     247.3          55.4                9.5 +/-    0.41      11.3 +/-    0.41  0.110 / 0.380
G29     324.8          49.0                8.8 +/-    1.30      11.3 +/-    1.30  0.070 / 0.100