PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-17:58:10
G02     62.8           30.1               14.7 +/-    0.47      25.8 +/-    0.47  0.050 / 0.070
G05     55.8           61.5               14.4 +/-    0.83      16.1 +/-    0.83  0.050 / 0.080
G12     184.9          28.8               16.2 +/-    2.13      29.0 +/-    2.13  0.050 / 0.120
G13     126.8          17.8               18.8 +/-    1.29      43.8 +/-    1.29  0.130 / 0.120
G15     161.5          15.1               20.5 +/-    2.21      51.0 +/-    2.21  0.100 / 0.240
G20     210.2          64.5               19.0 +/-    1.26      20.8 +/-    1.26  0.110 / 0.290
G21     274.9          21.3               13.9 +/-    2.10      29.7 +/-    2.10  0.100 / 0.290
G25     227.6          48.2               17.4 +/-    0.84      22.4 +/-    0.84  0.080 / 0.410
G29     335.7          62.9               14.9 +/-    0.73      16.6 +/-    0.73  0.030 / 0.040