PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-20:12:20
G02     41.5           48.8               11.0 +/-    1.05      14.0 +/-    1.05  0.030 / 0.050
G05     125.0          69.4               14.8 +/-    0.58      15.7 +/-    0.58  0.030 / 0.040
G12     190.1          54.1               13.8 +/-    0.73      16.6 +/-    0.73  0.030 / 0.030
G20     199.8          39.3               17.6 +/-    1.26      25.9 +/-    1.26  0.040 / 0.040
G25     267.2          60.4               13.5 +/-    0.60      15.3 +/-    0.60  0.030 / 0.040
G29     316.6          39.2               11.2 +/-    0.80      16.5 +/-    0.80  0.030 / 0.040