PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-21:12:40
G10     283.8          46.1               20.7 +/-    1.93      27.5 +/-    1.93  0.050 / 0.050
G15     48.7           36.4               17.3 +/-    0.56      26.7 +/-    0.56  0.050 / 0.050
G18     336.7          67.0               20.0 +/-    0.56      21.5 +/-    0.56  0.070 / 0.220
G20     64.7           24.4               20.1 +/-    1.57      39.7 +/-    1.57  0.070 / 0.170
G21     65.9           76.3               23.8 +/-    0.69      24.4 +/-    0.69  0.110 / 0.190
G24     108.6          22.2               23.6 +/-    0.79      49.4 +/-    0.79  0.110 / 0.260
G27     308.1          30.4               19.1 +/-    1.07      33.2 +/-    1.07  0.070 / 0.160
G29     166.5          12.1               24.2 +/-    1.52      64.6 +/-    1.52  0.060 / 0.190
G32     208.3          19.9               23.7 +/-    1.27      52.3 +/-    1.27  0.060 / 0.110