PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-22:28:10
G02     231.8          72.5               13.4 +/-    0.35      14.0 +/-    0.35  0.030 / 0.050
G05     172.6          13.3               19.6 +/-    1.45      50.8 +/-    1.45  0.040 / 0.040
G06     42.2           61.6               13.4 +/-    0.62      15.0 +/-    0.62  0.070 / 0.090
G12     321.6          48.8               12.2 +/-    0.52      15.6 +/-    0.52  0.110 / 0.090
G17     66.3           27.0               10.1 +/-    1.42      18.9 +/-    1.42  0.170 / 0.240
G19     51.4           42.7               12.6 +/-    1.15      17.6 +/-    1.15  0.210 / 0.260
G24     249.4          37.0               14.4 +/-    0.88      22.0 +/-    0.88  0.030 / 0.030