PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-17:27:50
G02     60.6           31.8               12.1 +/-    1.50      20.4 +/-    1.50  0.040 / 0.080
G05     59.7           63.6               12.8 +/-    0.54      14.2 +/-    0.54  0.060 / 0.070
G12     185.5          31.9               14.0 +/-    1.64      23.5 +/-    1.64  0.040 / 0.100
G13     129.0          15.8               16.5 +/-    1.23      40.2 +/-    1.23  0.040 / 0.110
G15     162.9          12.9               15.3 +/-    1.53      39.9 +/-    1.53  0.080 / 0.290
G20     208.5          61.1               14.9 +/-    0.48      16.8 +/-    0.48  0.100 / 0.310
G21     272.7          19.8               10.6 +/-    2.05      23.4 +/-    2.05  0.030 / 0.030
G25     231.5          50.5               12.9 +/-    1.35      16.2 +/-    1.35  0.030 / 0.040
G29     333.7          60.4               12.2 +/-    1.02      13.8 +/-    1.02  0.110 / 0.240