TABLE 1.

A selection of the data on visual range differences in pilots collected by Ginsburg and colleagues (4)

Meteorological Range (Miles)	Longest Detection Distance (Miles)	Shortest Detection Distance (Miles)	Detection Distance Range (Miles)	Variability (%)
2	1.15	0.73	0.42	37%
15	9.61	7.69	1.92	20%
13	11.8	9.24	2.56	22%
7	5.99	4.6	1.39	23%
3	0.48	0.29	0.19	40%
15	14.5	7.97	6.52	45%
15	7.51	5.5	2.01	27%
7	5.5	4.38	1.12	20%
15	8.77	6.42	2.37	27%
15	9.97	6.69	3.28	33%
				Average variability = 29%

Note the differences in pilot detection range while in the same environmental context (i.e., the same lighting and air quality conditions).