PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-16:42:30
G02     42.9           47.2               11.9 +/-    0.39      15.5 +/-    0.39  0.040 / 0.050
G05     122.9          69.1               13.7 +/-    0.45      14.6 +/-    0.45  0.040 / 0.050
G12     192.0          55.9               14.7 +/-    1.47      17.4 +/-    1.47  0.060 / 0.050
G20     200.3          37.5               15.5 +/-    0.95      23.5 +/-    0.95  0.040 / 0.050
G25     272.9          59.3               16.3 +/-    2.28      18.6 +/-    2.28  0.050 / 0.140
G29     317.6          40.8               13.5 +/-    1.31      19.4 +/-    1.31  0.050 / 0.110