PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-16:42:30
G02     25.6           61.8               17.6 +/-    0.95      19.7 +/-    0.95  0.050 / 0.070
G05     155.6          53.4               20.2 +/-    0.70      24.5 +/-    0.70  0.080 / 0.080
G06     49.9           22.7               13.3 +/-    2.54      27.4 +/-    2.54  0.020 / 0.020
G12     216.2          75.2               14.8 +/-    0.44      15.3 +/-    0.44  0.020 / 0.020
G19     95.2           12.6               17.8 +/-    2.72      46.9 +/-    2.72  0.130 / 0.350
G20     197.7          19.4               21.2 +/-    2.11      47.2 +/-    2.11  0.170 / 0.240
G25     304.0          50.9               13.5 +/-    5.94      16.9 +/-    5.94  0.020 / 0.040
G29     304.3          26.5               12.5 +/-    2.17      23.5 +/-    2.17  0.050 / 0.040