PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/21-23:13:10
G10     250.3          25.6               15.4 +/-    1.77      29.7 +/-    1.77  0.090 / 0.140
G13     55.0           31.6               14.6 +/-    0.65      24.7 +/-    0.65  0.090 / 0.120
G15     89.5           58.1               16.7 +/-    0.57      19.3 +/-    0.57  0.050 / 0.050
G16     298.3          14.4               10.0 +/-    1.71      25.3 +/-    1.71  0.050 / 0.050
G18     268.1          55.2               16.5 +/-    0.98      19.7 +/-    0.98  0.130 / 0.410
G20     43.2           47.8               12.9 +/-    0.72      16.7 +/-    0.72  0.130 / 0.450
G21     333.6          60.4               15.1 +/-    0.93      17.1 +/-    0.93  0.040 / 0.050
G26     270.6          15.5               13.8 +/-    2.63      33.8 +/-    2.63  0.040 / 0.050
G29     163.6          47.2               16.5 +/-    1.35      21.5 +/-    1.35  0.040 / 0.060