Table 3 Flight paths at altitudes with minimal air speeds. Values are means ± their respective standard deviation along the flight path. Headings are indicated in degrees from North. Bat headings and airspeeds show no variation due to the applied assumption of being constant during the entire migratory flight
Deployment | Altitude [m] | Bat heading [°] | Air-speed [m/s] | Wind heading [°] | Wind speed [m/s] | Tail-wind [m/s] | Cross-wind [m/s] | Ground heading [°] | Ground-speed [m/s] |
|---|---|---|---|---|---|---|---|---|---|
31861 | 1200 | 83 | 5.7 | 81 +/- 7 | 8.8 +/- 0.8 | 8.8 +/- 0.8 | 0.1 +/- 0.4 | 82 +/- 4 | 14.5 +/- 0.8 |
31898 | 10 | 143 | 8.3 | 83 +/- 10 | 7.8 +/- 0.7 | 6.7 +/- 0.4 | 4.0 +/- 0.8 | 114 +/- 6 | 13.9 +/- 0.3 |
2500 | 147 | 8.2 | 82 +/- 8 | 8.3 +/- 1.2 | 7.0 +/- 1.0 | 4.3 +/- 0.8 | 114 +/- 6 | 13.9 +/- 0.6 | |
31904 | 800 | 128 | 7.7 | 102 +/- 5 | 5.8 +/- 1.4 | 5.6 +/- 1.4 | 1.4 +/- 0.2 | 117 +/- 2 | 13.2 +/- 1.4 |
2500 | 139 | 7.0 | 95 +/- 8 | 7.3 +/- 0.8 | 6.8 +/- 0.9 | 2.7 +/- 0.4 | 117 +/- 3 | 13.2 +/- 1.0 | |
35902 | 1000 | 95 | 4.4 | 87 +/- 11 | 6.3 +/- 0.9 | 6.3 +/- 0.9 | 0.3 +/- 0.5 | 90 +/- 7 | 10.7 +/- 0.8 |
39007 | 400 | 87 | 6.2 | 112 +/- 4 | 10.9 +/- 0.7 | 10.8 +/- 0.7 | -1.7 +/- 0.3 | 103 +/- 3 | 16.8 +/- 0.6 |