PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-17:12:30
G02     36.8           52.7               12.2 +/-    1.45      14.9 +/-    1.45  0.030 / 0.040
G05     140.6          64.4               13.6 +/-    0.33      14.9 +/-    0.33  0.050 / 0.040
G06     56.0           13.8                9.9 +/-    2.90      25.4 +/-    2.90  0.030 / 0.030
G12     196.1          63.3               13.3 +/-    0.40      14.7 +/-    0.40  0.030 / 0.030
G20     198.9          30.8               14.1 +/-    1.80      24.3 +/-    1.80  0.030 / 0.030
G25     286.2          57.9               11.7 +/-    0.89      13.5 +/-    0.89  0.020 / 0.030
G29     312.6          35.0               10.0 +/-    1.84      15.8 +/-    1.84  0.150 / 0.200