Table 1.

Variable-density gas mixtures presented in random order to Xylocopa varipuncta females

Gas mixture% O2% N2% HeDensity (kg m-3)
12179.00.01.21
22163.215.81.04
32147.431.60.88
42131.647.40.72
52115.863.20.57
6210.079.00.41