PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-16:12:10
G02     39.5           50.2               10.7 +/-    0.43      13.5 +/-    0.43  0.030 / 0.050
G05     133.3          66.5               13.4 +/-    0.81      14.5 +/-    0.81  0.040 / 0.050
G06     57.2           12.7                8.9 +/-    1.12      23.5 +/-    1.12  0.030 / 0.030
G12     194.8          60.8               13.2 +/-    0.63      14.8 +/-    0.63  0.030 / 0.040
G20     199.5          32.9               14.8 +/-    1.35      24.4 +/-    1.35  0.090 / 0.160
G25     282.3          58.3               13.2 +/-    0.84      15.2 +/-    0.84  0.080 / 0.140