Noise Monitoring Data
CHENNAI  -  2014
Months	January		February		March		April		May		June		July		August		September		October		November		December
Stations	Day	Night	Day	Night	Day	Night	Day	Night	Day	Night	Day	Night	Day	Night	Day	Night	Day	Night	Day	Night	Day	Night	Day	Night
Eye Hospital (S) Standard Limit in Leq dB(A):Day 50, Night 40	63	54	62	52	64	52	64	54	64	53	62	54	56	53	54	53	53	52	62	56	62	54	60	53
Guindy (I) Standard Limit in Leq dB(A):Day 75, Night 70	74	69	75	70	75	70	76	71	76	71	76	72	76	72	76	72	76	72	78	73	80	75	80	75
Perambur (C) Standard Limit in Leq dB(A):Day 65, Night 55	68	57	69	57	68	57	69	57	68	58	68	58	68	58	68	58	68	57	71	59	71	59	71	59
T Nagar (C) Standard Limit in Leq dB(A):Day 65, Night 55	74	66	75	67	75	66	75	67	76	68	75	69	75	69	74	67	73	65	75	64	76	65	76	67
Triplicane (R) Standard Limit in Leq dB(A):Day 55, Night 45	68	58	67	56	67	55	67	55	68	55	67	57	68	57	68	59	68	56	68	56	71	60	71	61
All Values are measured in Leq dB(A)
(I= Industrial, C= Commercial, R= Residential, S= Silence)