PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-22:13:00
G02     232.1          72.5               16.9 +/-    0.37      17.7 +/-    0.37  0.030 / 0.040
G05     172.6          13.4               26.1 +/-    2.41      67.6 +/-    2.41  0.030 / 0.040
G06     42.1           61.4               15.7 +/-    0.51      17.6 +/-    0.51  0.070 / 0.090
G12     321.7          49.1               14.7 +/-    0.93      18.7 +/-    0.93  0.060 / 0.100
G17     66.5           26.7               11.9 +/-    1.55      22.4 +/-    1.55  0.170 / 0.240
G19     51.5           42.7               14.6 +/-    1.14      20.4 +/-    1.14  0.190 / 0.210
G24     249.1          36.9               19.1 +/-    1.35      29.2 +/-    1.35  0.030 / 0.030