PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-16:58:10
G02     265.5          79.4               15.5 +/-    0.67      15.7 +/-    0.67  0.230 / 0.210
G05     173.0          19.3               20.3 +/-    1.94      45.4 +/-    1.94  0.190 / 0.160
G06     40.0           51.7               13.9 +/-    0.76      17.2 +/-    0.76  0.030 / 0.050
G12     320.5          59.7               14.2 +/-    0.93      16.1 +/-    0.93  0.030 / 0.030
G17     78.6           15.6               13.0 +/-    1.78      31.8 +/-    1.78  0.100 / 0.130
G19     66.2           32.3               12.3 +/-    2.04      20.5 +/-    2.04  0.120 / 0.150
G24     239.7          30.8               17.0 +/-    1.86      29.4 +/-    1.86  0.100 / 0.150
G25     317.7          22.2               15.2 +/-    2.42      31.6 +/-    2.42  0.100 / 0.150