PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-00:57:50
G01     318.7          18.4               15.1 +/-    1.52      34.6 +/-    1.52  0.040 / 0.030
G08     255.5          12.9               21.1 +/-    2.51      55.3 +/-    2.51  0.040 / 0.030
G10     79.7           53.8               16.8 +/-    1.35      20.3 +/-    1.35  0.160 / 0.150
G11     301.6          24.5               14.1 +/-    2.02      27.9 +/-    2.02  0.130 / 0.150
G14     303.0          71.4               15.8 +/-    1.14      16.5 +/-    1.14  0.070 / 0.050
G18     102.1          28.8               18.7 +/-    1.24      33.7 +/-    1.24  0.050 / 0.060
G31     178.3          40.3               22.6 +/-    1.14      32.8 +/-    1.14  0.050 / 0.040
G32     0.1            68.8               14.3 +/-    1.07      15.2 +/-    1.07  0.060 / 0.040