PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-22:43:10
G02     60.4           33.6                9.2 +/-    2.09      15.0 +/-    2.09  0.060 / 0.090
G05     56.3           61.5               10.0 +/-    0.52      11.2 +/-    0.52  0.050 / 0.100
G12     183.5          27.8               12.1 +/-    1.17      22.1 +/-    1.17  0.100 / 0.090
G13     127.0          17.4               12.6 +/-    1.84      29.5 +/-    1.84  0.070 / 0.090
G15     164.0          13.2               15.0 +/-    1.96      39.0 +/-    1.96  0.070 / 0.130
G20     208.5          65.5               12.8 +/-    0.66      13.9 +/-    0.66  0.090 / 0.120
G25     225.0          47.9               12.5 +/-    2.80      16.2 +/-    2.80  0.030 / 0.040
G29     331.7          59.4                9.8 +/-    0.40      11.1 +/-    0.40  0.040 / 0.030