PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-20:12:50
G05     52.8           11.0               13.8 +/-    1.98      37.5 +/-    1.98  0.100 / 0.200
G10     244.2          20.1               17.1 +/-    1.39      37.5 +/-    1.39  0.100 / 0.240
G13     63.2           35.1               14.2 +/-    0.80      22.5 +/-    0.80  0.050 / 0.060
G15     103.0          57.2               17.0 +/-    0.85      19.8 +/-    0.85  0.040 / 0.070
G16     307.4          13.2               12.0 +/-    1.81      31.2 +/-    1.81  0.110 / 0.370
G18     258.4          51.1               16.2 +/-    1.31      20.1 +/-    1.31  0.100 / 0.360
G20     36.9           55.7               15.1 +/-    0.66      17.9 +/-    0.66  0.140 / 0.280
G21     326.3          56.1               15.2 +/-    0.84      17.9 +/-    0.84  0.100 / 0.320
G26     280.0          17.6               13.4 +/-    1.28      31.4 +/-    1.28  0.050 / 0.120
G29     159.8          54.1               17.6 +/-    1.00      21.2 +/-    1.00  0.050 / 0.140