PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-16:43:00
G02     25.6           61.8               14.2 +/-    0.70      15.9 +/-    0.70  0.040 / 0.030
G05     155.6          53.4               20.4 +/-    1.07      24.7 +/-    1.07  0.030 / 0.040
G06     49.9           22.7               12.8 +/-    0.68      26.4 +/-    0.68  0.040 / 0.060
G12     216.2          75.2               15.2 +/-    1.08      15.7 +/-    1.08  0.040 / 0.060
G19     95.2           12.6               17.9 +/-    1.51      47.1 +/-    1.51  0.040 / 0.040
G20     197.7          19.4               20.1 +/-    1.70      44.9 +/-    1.70  0.050 / 0.040
G25     304.0          50.9               13.4 +/-    1.41      16.7 +/-    1.41  0.060 / 0.120
G29     304.3          26.5               10.5 +/-    2.55      19.9 +/-    2.55  0.080 / 0.120