=+Uroleucon ambrosiae alatae on Bean Plants” (Environmental Entomology [1991]: 1375–1380) reported on a study in which aphids were placed on a bean plant, and the elapsed time until half of the aphids had departed was observed. Data on x 5 wind speed (m/sec) and y 5 residence half time were given and used to produce the following information.

a 5 0.0119 b 5 3.4307 n 5 13 SSTo 5 73.937 SSResid 5 27.890