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Hourly median dBA values of broadband (12.5–20 kHz) sound pressure levels (median sound pressure level = L50) for (A) all data collected in spring (March/April) 2012–2014 at Bartlett Cove and (B) all data collected in fall (September) 2011 at 5 other recording sites in Glacier Bay. Dashed line represents mean monthly sunrise, and shaded areas represent standard deviation.
