PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-21:27:50
G02     39.7           49.9               12.0 +/-    0.48      15.1 +/-    0.48  0.030 / 0.050
G05     118.4          68.0               12.8 +/-    0.52      13.7 +/-    0.52  0.030 / 0.030
G12     187.6          55.7               13.3 +/-    2.14      15.7 +/-    2.14  0.030 / 0.050
G25     281.3          57.7               12.3 +/-    0.67      14.2 +/-    0.67  0.030 / 0.070
G29     312.7          33.4               10.4 +/-    1.22      17.0 +/-    1.22  0.050 / 0.040