PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-16:57:20
G02     37.5           52.0               14.7 +/-    1.11      18.1 +/-    1.11  0.030 / 0.050
G05     138.9          64.9               15.1 +/-    0.35      16.4 +/-    0.35  0.040 / 0.040
G06     56.3           13.5               11.2 +/-    2.73      28.9 +/-    2.73  0.040 / 0.030
G12     195.8          62.7               14.4 +/-    0.93      16.0 +/-    0.93  0.040 / 0.040
G20     199.1          31.4               14.7 +/-    1.64      25.1 +/-    1.64  0.030 / 0.030
G25     285.2          58.0               14.1 +/-    1.30      16.3 +/-    1.30  0.030 / 0.030
G29     313.1          35.7               11.5 +/-    2.43      18.1 +/-    2.43  0.110 / 0.200