PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-14:58:00
G02     202.5          28.6               20.4 +/-    1.12      36.8 +/-    1.12  0.070 / 0.110
G06     166.0          64.1               21.1 +/-    1.20      23.2 +/-    1.20  0.060 / 0.110
G12     305.5          12.1               11.9 +/-    4.06      31.7 +/-    4.06  0.140 / 0.270
G17     34.8           50.3               16.3 +/-    0.70      20.5 +/-    0.70  0.140 / 0.300
G19     357.3          66.8               16.9 +/-    0.58      18.2 +/-    0.58  0.030 / 0.040
G24     304.0          34.6               13.8 +/-    1.42      22.0 +/-    1.42  0.030 / 0.030
G28     98.8           33.5               16.3 +/-    0.52      26.6 +/-    0.52  0.030 / 0.080