PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-21:28:00
G10     274.1          41.4               14.1 +/-    2.09      20.1 +/-    2.09  0.100 / 0.340
G13     39.9           14.6               14.3 +/-    2.11      35.9 +/-    2.11  0.100 / 0.340
G15     53.3           43.5               15.1 +/-    1.31      20.8 +/-    1.31  0.130 / 0.340
G18     316.6          66.3               12.2 +/-    0.73      13.2 +/-    0.73  0.140 / 0.290
G20     59.2           29.8               14.7 +/-    0.94      25.9 +/-    0.94  0.050 / 0.050
G21     30.2           75.7               16.5 +/-    0.61      16.9 +/-    0.61  0.040 / 0.050
G24     115.9          17.8               20.1 +/-    1.84      46.6 +/-    1.84  0.100 / 0.410
G27     314.1          25.2               11.9 +/-    0.97      23.2 +/-    0.97  0.130 / 0.360
G29     166.6          20.1               19.3 +/-    2.53      42.3 +/-    2.53  0.070 / 0.160
G32     206.4          12.5               22.2 +/-    4.52      58.5 +/-    4.52  0.080 / 0.150