Sampling spots

Time

N^a

Mean

SD

Median

p-value^b

Kitchen

Before

8

774

756

568

0.08

After

8

223

104

197

Bedroom

Before

8

135

149

100

0.20

After

8

176

28

163

Total

Before

8

455

621

183

0.46

After

8

200

77

163