Table 1.

The ten locations sampled in this study and two hallway locations sampled in a previous study, their location codes used throughout this paper, and their construction dates.¹⁵

Sampling Location	Location Code	Construction Dates
Math Room	MR	Before 1920
Art Storage Room	AS	Before 1920
Art Room	AR	Before 1920
Library	L	1920–1970
High School Gym	HG	1920–1970
Social Studies Room	SS	1920–1970
Family Consumer Science Room	FCS	1920–1970
Science Room	SR	1920–1970
Practice Gym	PG	2010s
Outside	OS	N/A
High School Hallway	HSH	1920–1970
Middle School Hallway	MSH	Before 1920