PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-00:28:00
G02     203.9          39.9               14.3 +/-    0.79      20.9 +/-    0.79  0.190 / 0.190
G06     153.4          72.8               13.2 +/-    0.50      13.7 +/-    0.50  0.200 / 0.160
G12     309.5          17.7               12.0 +/-    1.69      27.9 +/-    1.69  0.040 / 0.030
G17     35.4           50.1               11.7 +/-    1.09      14.7 +/-    1.09  0.030 / 0.030
G19     7.4            63.3               11.6 +/-    0.36      12.8 +/-    0.36  0.150 / 0.100
G24     294.0          39.6               11.7 +/-    7.35      17.2 +/-    7.35  0.070 / 0.090
G28     106.3          28.3               15.1 +/-    1.57      27.4 +/-    1.57  0.110 / 0.140