PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-18:27:50
G02     233.0          70.5               17.6 +/-   13.47      18.6 +/-   13.47  0.160 / 0.380
G05     175.6          11.6               14.8 +/-   19.70      40.0 +/-   19.70  0.120 / 0.480
G06     41.7           60.6               10.5 +/-   11.10      11.9 +/-   11.10  0.070 / 0.110
G12     321.9          50.7               11.0 +/-    0.98      13.8 +/-    0.98  0.060 / 0.090
G17     70.9           21.3               10.7 +/-    1.52      22.9 +/-    1.52  0.080 / 0.180
G19     56.9           38.3                7.0 +/-   28.87      10.5 +/-   28.87  0.080 / 0.180
G24     249.8          36.4               13.0 +/-    0.84      20.2 +/-    0.84  0.030 / 0.060
G25     316.6          14.9                9.6 +/-    2.94      23.9 +/-    2.94  0.030 / 0.060