PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-22:27:50
G10     263.5          35.3               12.0 +/-    1.35      18.9 +/-    1.35  0.140 / 0.360
G13     44.4           22.4               10.6 +/-    2.16      22.0 +/-    2.16  0.140 / 0.380
G15     63.6           51.6               14.2 +/-    1.10      17.6 +/-    1.10  0.040 / 0.050
G16     285.2          12.2               12.0 +/-    1.26      31.8 +/-    1.26  0.040 / 0.050
G18     293.6          63.1               12.0 +/-    0.41      13.3 +/-    0.41  0.140 / 0.490
G20     52.6           36.7               11.0 +/-    0.58      16.9 +/-    0.58  0.170 / 0.510
G21     358.1          70.5               13.0 +/-    0.60      13.7 +/-    0.60  0.110 / 0.130
G24     124.1          12.0                0.4 +/-   43.30       1.2 +/-   43.30  0.110 / 0.140
G27     319.2          17.8               10.4 +/-    1.12      24.0 +/-    1.12  0.050 / 0.110
G29     166.1          31.0               12.7 +/-    2.14      21.7 +/-    2.14  0.040 / 0.110