Noise quantification in the intensive care unit of a tertiary care hospital

Table 1 Average monthly and overall maximum sound level, L10, L50, L90 (representing sound levels exceeding 10%, 50%, and 90% of the time, respectively), equivalent continuous noise level and sound exposure level

	Lmax	L90	L10	L50	Leq	SEL
December 2024	82.3 ± 4.9	56.5 ± 3.1	67.6 ± 3.2	61.5 ± 3.4	64.8 ± 2.9	97.4 ± 2.9
January 2025	82.1 ± 4.5	55.5 ± 2.6	67.0 ± 2.8	60.6 ± 3.0	64.2 ± 2.6	96.7 ± 2.6
February 2025	82.8 ± 4.0	56.4 ± 2.9	67.9 ± 2.8	61.5 ± 3.2	65.1 ± 2.7	97.7 ± 2.7
March 2025	82.7 ± 4.2	57.1 ± 2.3	67.6 ± 2.8	61.6 ± 2.9	64.9 ± 2.7	97.5 ± 2.7
December 2024 - March 2025	82.5 ± 4.4	56.4 ± 2.8	67.5 ± 2.9	61.3 ± 3.2	64.8 ± 2.8	97.7 ± 2.8

L10, L50, L90: Representing sound levels exceeding 10%, 50%, and 90% of the time, respectively; LEQ: Equivalent continuous noise level; Lmax: Maximum sound level; SEL: Sound exposure level.