PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-22:13:00
G10     282.9          45.7               15.0 +/-    1.35      19.9 +/-    1.35  0.060 / 0.070
G15     49.1           37.4               11.9 +/-    0.88      18.1 +/-    0.88  0.080 / 0.080
G18     334.2          66.9               13.7 +/-    0.39      14.7 +/-    0.39  0.050 / 0.030
G20     64.4           24.5               12.6 +/-    0.88      24.8 +/-    0.88  0.050 / 0.030
G21     60.8           76.7               14.6 +/-    0.61      14.9 +/-    0.61  0.130 / 0.230
G24     109.2          21.8               15.4 +/-    0.90      32.4 +/-    0.90  0.120 / 0.170
G27     308.6          30.0               12.5 +/-    1.74      21.9 +/-    1.74  0.080 / 0.110
G29     166.8          13.3               19.7 +/-    1.38      51.0 +/-    1.38  0.080 / 0.110
G32     208.0          19.6               20.4 +/-    2.09      45.3 +/-    2.09  0.100 / 0.180