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. 2008 Sep 10;3(9):e3141. doi: 10.1371/journal.pone.0003141

Table 1. The modulation of shimmering by hovering hornets regarding their distance to the honeybee nest (scenario B).

Categories of distance of the hornets from the nest before shimmering Number of episodes Distance of the hornets from the nest before shimmering Shimmering activity as response to the presence of the hornets
Cdxz dxz [cm] n dxz [cm] Wpeak W600
1 0–18 6 12.7±1.8 12.6±1.3 71.1±4.4
2 18–30 19 25.9±0.7 12.1±2.0 67.1±6.9
3 30–40 49 35.8±0.4 10.0±0.8 55.2±2.9
4 40–60 79 49.2±0.7 8.2±0.5 49.4±2.0
5 >60 48 71.5±1.5 6.5±0.5 42.4±2.1
201

Shimmering activities of 201 episodes in terms of Wpeak and W600 in dependence of the pre-wave distances of the hornets from the nest (definitions, see Methods). The hornet data (dxz) were assessed in the interval 400 ms prior to shimmering. Shimmering responses (means±SEM) were categorized by five classes (Cdxz = 1 to 5) of dxz (cf. Fig. 3A).