Table 1.

Characteristics of the three urban protected areas including size, distance from Boston's urban center (Park Street MBTA Station), roadways that border or intersect the protected area, general site characteristics, and the number of noise measurements collected during the three sampling events: before the COVID-19 lockdown (designated “pre-COVID-19”), data gathered at the beginning of lockdown in March when there were no leaves on the trees (designated “COVID-19 with non-leafed trees”), and data gathered later during lockdown when the trees had regained leaves (designated “COVID-19 with leafed trees”).

Protected area	Size (ha)	Distance from Boston (km)	Major roads nearby	General characteristics	Sample size pre-COVID-19	Sample size COVID-19 with non-leafed trees	Sample size COVID-19 with leafed trees
Blue Hills	2800	24	U.S. 93 Route 138 Route 24	Recreational lake area with swimming Weather observatory Nature center Hiking and ski trails	1037	265	173
Hammond Pond	82	11	Hammond Pond Parkway	Large pond Hiking trails Nearby houses and large shopping center	637	252	219
Hall's Pond	1.4	4.2	Beacon Street	Large recreational field Nearby apartment buildings, retail businesses, and houses	84	45	45