PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-18:42:30
G02     249.8          76.2               14.9 +/-    0.47      15.3 +/-    0.47  0.180 / 0.310
G05     173.2          17.4               18.1 +/-    2.35      42.5 +/-    2.35  0.090 / 0.250
G06     40.3           53.7               12.3 +/-    0.87      14.9 +/-    0.87  0.090 / 0.130
G12     321.4          57.6               11.2 +/-    1.24      13.0 +/-    1.24  0.110 / 0.130
G17     76.4           17.2               11.9 +/-    1.90      28.0 +/-    1.90  0.090 / 0.200
G19     63.5           34.0               11.5 +/-    1.10      18.7 +/-    1.10  0.120 / 0.200
G24     242.5          32.6               13.4 +/-    1.23      22.3 +/-    1.23  0.040 / 0.050
G25     317.5          20.8               10.2 +/-    2.78      21.9 +/-    2.78  0.040 / 0.050