PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/27-17:28:10
G02     251.1          77.0               12.8 +/-    0.78      13.1 +/-    0.78  0.070 / 0.090
G05     174.1          16.5               16.5 +/-    1.41      39.5 +/-    1.41  0.080 / 0.130
G06     40.2           54.4               11.0 +/-    0.68      13.2 +/-    0.68  0.040 / 0.050
G12     321.3          56.8               11.2 +/-    1.64      13.1 +/-    1.64  0.040 / 0.060
G17     76.2           17.4               10.8 +/-    1.89      25.3 +/-    1.89  0.110 / 0.270
G19     63.3           34.2               11.0 +/-    1.35      17.7 +/-    1.35  0.110 / 0.380
G24     242.7          32.7               12.8 +/-    1.74      21.2 +/-    1.74  0.090 / 0.150
G25     317.5          19.9               12.5 +/-    1.43      27.6 +/-    1.43  0.090 / 0.240