Fig. 1. Relationship between cumulative days from start of study in fall and geometric mean diameter (GMD) for (a) Fairfield (1992-1993), (b) Wilson (1993-1994), and (c) Lethbridge (1994-1995) sites. For ease of interpretation the x-axis label is shown as date rather than cumulative days. Cumulative days are shown above or below data points. Day 1 = 18 Sept. 1992 at Fairfield; 26 Oct. 1993 at Wilson, and 30 Aug. 1994 at Lethbridge. Error bars = 1 standard error