PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-16:42:50
G02     34.8           54.3               15.6 +/-    0.44      18.7 +/-    0.44  0.040 / 0.050
G05     144.1          62.4               17.8 +/-    0.70      19.9 +/-    0.70  0.040 / 0.050
G06     54.6           15.8               12.3 +/-    1.11      29.9 +/-    1.11  0.030 / 0.040
G12     198.8          66.1               13.8 +/-    0.69      14.9 +/-    0.69  0.040 / 0.040
G20     198.6          28.2               17.8 +/-    0.98      32.3 +/-    0.98  0.120 / 0.280
G25     291.0          56.6               14.2 +/-    0.77      16.6 +/-    0.77  0.120 / 0.340
G29     311.0          33.4               12.0 +/-    1.06      19.6 +/-    1.06  0.120 / 0.190