PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-21:57:40
G10     254.2          28.7               18.3 +/-    2.24      32.9 +/-    2.24  0.100 / 0.120
G13     51.1           29.1               14.7 +/-    1.32      26.2 +/-    1.32  0.130 / 0.110
G15     79.2           56.6               17.4 +/-    0.76      20.4 +/-    0.76  0.040 / 0.040
G16     294.8          13.9               12.5 +/-    1.75      32.1 +/-    1.75  0.040 / 0.050
G18     275.6          58.4               14.4 +/-    1.81      16.7 +/-    1.81  0.110 / 0.410
G20     45.9           44.6               14.7 +/-    0.64      19.9 +/-    0.64  0.140 / 0.320
G21     340.7          64.0               15.9 +/-    0.57      17.5 +/-    0.57  0.070 / 0.070
G26     267.3          13.7               15.7 +/-    1.36      40.3 +/-    1.36  0.050 / 0.070
G29     164.2          41.4               17.6 +/-    0.88      25.0 +/-    0.88  0.070 / 0.070