PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-16:57:50
G02     355.1          76.1               13.0 +/-    0.77      13.3 +/-    0.77  0.070 / 0.090
G05     166.6          35.2               18.5 +/-    1.35      29.2 +/-    1.35  0.070 / 0.080
G06     43.0           36.7               12.1 +/-    1.50      18.7 +/-    1.50  0.020 / 0.030
G12     300.1          75.5               11.0 +/-    0.49      11.3 +/-    0.49  0.040 / 0.040
G19     80.8           22.7               12.6 +/-    2.73      25.9 +/-    2.73  0.050 / 0.060
G24     226.2          19.8               15.6 +/-    2.65      34.5 +/-    2.65  0.190 / 0.110
G25     315.6          36.6               13.1 +/-    1.41      20.2 +/-    1.41  0.080 / 0.150
G29     291.3          14.6               10.9 +/-    0.72      27.4 +/-    0.72  0.150 / 0.180