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Fig. 5. Average change in track angle over time when flying in (right; mosquitoes
entering the plume) or out (left; mosquitoes leaving the plume) of a plume
consisting of skin odour or CO2. Straight upwind flight would be
0°. The grey vertical line represents the plume boundary. Values are means
± S.E.M., averaged over all mosquito
tracks (see N values) (A) Skin odour series: 100% skin odour
(N=36), 20% skin odour (N=28), 4% skin odour
(N=22), `hand' (N=49), clean air (N=17); (B)
CO2 series: 1% CO2 (N=31), 0.3% CO2
(N=26), 0.1% CO2 (N=30), 0.05% CO2
(N=25), `hand' (N=23); (C) sensitization series: 100% skin
odour (N=24), 20% skin odour (N=38), 20% skin odour +
CO2 (N=40), CO2 (N=19).