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               16.1 +/-    1.16      25.1 +/-    1.16  0.090 / 0.060
G13     43.7           21.5               14.8 +/-    2.38      31.5 +/-    2.38  0.120 / 0.080
G15     62.1           50.8               16.5 +/-    0.81      20.6 +/-    0.81  0.040 / 0.030
G16     283.9          11.9               17.3 +/-    1.67      46.4 +/-    1.67  0.040 / 0.030
G18     296.0          63.5               15.3 +/-    0.92      16.9 +/-    0.92  0.200 / 0.320
G20     53.5           35.7               15.3 +/-    1.16      24.1 +/-    1.16  0.190 / 0.360
G21     0.6            71.2               16.5 +/-    0.72      17.3 +/-    0.72  0.050 / 0.060
G24     123.1          12.7               18.4 +/-    1.84      48.4 +/-    1.84  0.050 / 0.110
G27     318.7          18.8               16.1 +/-    3.11      36.6 +/-    3.11  0.100 / 0.160
G29     166.3          29.8               17.2 +/-    2.63      30.3 +/-    2.63  0.110 / 0.140