Table 2: Statistics of star clusters identified near the regions.

Region	No. of clusters	No. of clusters	Age groups
	within 30 arcmin	with age known	7.5	7.5-8.0	8.0-8.5	8.5-9.0	9.0
Region 1	15	12	1	-	7	3	1
Region 2	9	8	-	4	1	2	1
Region 3	17	13	-	3	3	3	4
Region 4	24	19	-	2	11	4	2
Region 5	17	15	1	1	6	5	2
Region 6	27	22	-	4	11	7	-