PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-15:28:00
G02     211.4          52.1               13.6 +/-    0.72      16.7 +/-    0.72  0.070 / 0.060
G06     86.1           79.4               13.4 +/-    0.28      13.7 +/-    0.28  0.070 / 0.060
G12     316.5          30.3               12.5 +/-    1.10      21.7 +/-    1.10  0.110 / 0.090
G17     54.2           34.1               12.1 +/-    0.97      19.6 +/-    0.97  0.100 / 0.100
G19     34.6           51.8               13.0 +/-    1.80      16.1 +/-    1.80  0.050 / 0.060
G24     276.5          42.0               10.8 +/-    0.87      15.2 +/-    0.87  0.050 / 0.080
G28     118.7          17.7               11.2 +/-    1.38      26.1 +/-    1.38  0.020 / 0.020