Table 2. Statistical information about oil droplets dispersed during chainsaw operation simulation for logging and pruning, including the number of filter papers used, the average amount of oil dropped per filter paper over 5 minutes, and the corresponding standard error.

	Number of filter paper	Average amount of oil (g/filter paper∙5min)	Standard error
Cluster 1	15	0.0930	0.0090
Cluster 2	13	0.1135	0.0108
Cluster 3	17	0.1184	0.0158
Cluster 4	21	0.1227	0.0179
Cluster 5	21	0.0929	0.0084
Cluster 6	22	0.1226	0.0161
Cluster 7	11	0.0806	0.0089
Cluster 8	12	0.1168	0.0164
Cluster 9	9	0.1010	0.0140