PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-21:42:30
G10     248.4          24.0               19.4 +/-    1.13      38.8 +/-    1.13  0.060 / 0.130
G13     57.3           32.8               15.0 +/-    1.28      24.8 +/-    1.28  0.070 / 0.110
G15     92.7           57.9               19.0 +/-    0.68      22.0 +/-    0.68  0.040 / 0.040
G16     301.3          14.1               12.4 +/-    3.03      31.6 +/-    3.03  0.040 / 0.040
G18     265.3          54.3               16.4 +/-    2.48      19.7 +/-    2.48  0.140 / 0.350
G20     41.3           50.3               16.0 +/-    0.78      20.1 +/-    0.78  0.120 / 0.390
G21     331.8          59.3               15.2 +/-    0.75      17.3 +/-    0.75  0.050 / 0.050
G26     273.7          16.2               16.3 +/-    1.89      39.4 +/-    1.89  0.040 / 0.050
G29     162.4          48.9               19.2 +/-    0.35      24.6 +/-    0.35  0.030 / 0.040