PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-19:57:40
G05     47.0           24.2               14.6 +/-    1.61      29.1 +/-    1.61  0.080 / 0.240
G13     83.5           37.4               17.5 +/-    0.73      26.7 +/-    0.73  0.090 / 0.230
G15     130.5          49.1               19.3 +/-    1.21      24.6 +/-    1.21  0.050 / 0.080
G18     241.6          38.9               18.6 +/-    1.39      27.6 +/-    1.39  0.050 / 0.100
G20     23.5           70.6               17.5 +/-    0.88      18.5 +/-    0.88  0.040 / 0.040
G21     309.9          45.5               15.2 +/-    0.98      20.4 +/-    0.98  0.050 / 0.050
G25     199.5          12.7               17.7 +/-    2.46      46.5 +/-    2.46  0.100 / 0.510
G26     295.9          19.0               14.5 +/-    0.86      32.8 +/-    0.86  0.110 / 0.540
G29     148.8          72.4               20.0 +/-    0.81      20.9 +/-    0.81  0.070 / 0.110