an example is shown in the figure below. the band was founded in 1984 by a small group of serving firefighters who were keen to start a band made up from serving officers and their families. at this time, the fire was at . a 243 design has five factors, four with two levels and one with three levels, and has 16 × 3 = 48 experimental conditions. in addition to the petting zoo and enchanted forest exhibits, activities for visitors include hay rides, pony rides, playground and play areas, picnic area, birthday parties, and educational tours. 