PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/19-17:58:10
G02     201.8245       17.5095         14.8381 +/-  1.1290   34.7070 +/-  1.1290  0.180 / 0.690
G06     169.7212       55.3355         14.6290 +/-  0.8474   17.3698 +/-  0.8474  0.180 / 0.840
G13     228.1153       12.6637         13.6374 +/-  3.2579   35.8599 +/-  3.2579  0.100 / 0.180
G17     26.4761        57.0891          9.8282 +/-  0.2348   11.4659 +/-  0.2348  0.100 / 0.220
G19     333.7495       70.9734         11.3344 +/-  0.5395   11.9178 +/-  0.5395  0.030 / 0.050
G24     310.7586       28.8384         10.6979 +/-  0.9624   19.1987 +/-  0.9624  0.020 / 0.050
G28     89.2948        39.1124         11.8911 +/-  0.5067   17.5509 +/-  0.5067  0.070 / 0.140
G30     157.8534       15.9376         12.1023 +/-  1.5888   29.4226 +/-  1.5888  0.080 / 0.130