PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-20:58:10
G02     47.9           43.5               12.9 +/-    0.41      17.7 +/-    0.41  0.030 / 0.080
G05     97.4           71.3               12.6 +/-    0.44      13.2 +/-    0.44  0.040 / 0.060
G12     187.3          45.2               14.1 +/-    1.51      19.0 +/-    1.51  0.050 / 0.060
G20     201.7          47.7               15.0 +/-    1.27      19.5 +/-    1.27  0.050 / 0.040
G25     249.4          58.7               13.3 +/-    0.78      15.3 +/-    0.78  0.040 / 0.040
G29     321.6          45.4               10.5 +/-    1.08      14.1 +/-    1.08  0.030 / 0.040