A cross-sectional analysis of light at night, neighborhood sociodemographics and urinary 6-sulfatoxymelatonin concentrations: implications for the conduct of health studies

Table 2 Estimates of outdoor LAN among study participants (n = 303)

	Mean (Range)
Outdoor LAN satellite values (annual average radiance)
Low-dynamic range, 2000 average (DN units)	43.4 (4 – 63)
High-dynamic range, 2006 average (scaled radiance units)	128.4 (3.8 – 465.2)
Length-of-night on day of urine collection (hours)	11 (9.2 – 14.4)

ISSN: 1476-072X