PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-22:42:50
G10     264.7          36.0               15.1 +/-    1.36      23.4 +/-    1.36  0.050 / 0.050
G13     43.7           21.5               14.4 +/-    1.32      30.6 +/-    1.32  0.040 / 0.050
G15     62.1           50.8               18.5 +/-    0.97      23.0 +/-    0.97  0.120 / 0.350
G16     283.9          11.9               17.0 +/-    2.55      45.5 +/-    2.55  0.110 / 0.360
G18     296.0          63.5               15.3 +/-    1.06      16.9 +/-    1.06  0.140 / 0.480
G20     53.5           35.7               14.8 +/-    1.61      23.1 +/-    1.61  0.120 / 0.510
G21     0.6            71.2               16.6 +/-    1.04      17.4 +/-    1.04  0.120 / 0.180
G24     123.1          12.7               16.9 +/-    2.90      44.5 +/-    2.90  0.120 / 0.180
G27     318.7          18.8               14.7 +/-    2.12      33.4 +/-    2.12  0.070 / 0.280
G29     166.3          29.8               17.3 +/-    2.36      30.4 +/-    2.36  0.070 / 0.250