BRNY-LD , LHN


Noise Levels at Different Periods

The table below gives the decibel 10% noise level (in db) for each month in several period bands. The 10% noise level is defined as the signal level not exceeded 10% of the time, based on hourly measurements. Each entry in the table is color coded with reference to the New Low Noise Model (NLNM, Peterson, 1993):
navy, -6 db < value-NLNM < -3 db
blue, -3 db < value-NLNM < 3 db
aqua, 3 db < value-NLNM < 6 db
lime, 6 db < value-NLNM < 9 db
yellow, 9 db < value-NLNM < 12 db
orange, 12 db < value-NLNM < 15 db
red, 15 db < value-NLNM < 20 db
fuchsia, 20 db < value-NLNM < 25 db
silver, value-NLNM < -6 db, value-NLNM > 25 db

Black indicates that there was an insufficient number of hourly measurements to calculate a noise level.

Noise levels (PSD) in decibels
Month Chan. Qual. # obs. 518s 439s 373s 316s 268s 228s 193s 164s 139s 118s 100s 85s 72s 61s 52s 44s 37s 32s 27s 23s 19s 16s 14s 12s 10s
202404 LHN AR 592 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202403 LHN AR 223 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202402 LHN AR 443 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202401 LHN AR 726 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202312 LHN AR 740 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202311 LHN AR 671 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202310 LHN AR 729 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202309 LHN AR 389 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202308 LHN AR 116 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202307 LHN AR 726 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202306 LHN AR 703 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202305 LHN AR 671 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202304 LHN AR 717 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202303 LHN AR 744 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202302 LHN AR 666 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202301 LHN AR 744 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202212 LHN AR 741 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202211 LHN AR 718 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202210 LHN AR 733 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202209 LHN AR 719 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202208 LHN AR 709 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202207 LHN AR 589 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202206 LHN AR 717 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202205 LHN AR 629 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202204 LHN AR 697 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202203 LHN AR 741 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202202 LHN AR 668 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202201 LHN AR 737 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202112 LHN AR 696 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202111 LHN AR 718 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202110 LHN AR 743 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202109 LHN AR 696 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202108 LHN AR 721 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202107 LHN AR 742 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202106 LHN AR 719 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202105 LHN AR 739 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202104 LHN AR 719 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202103 LHN AR 268 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202012 LHN AR 233 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202011 LHN AR 703 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202010 LHN AR 735 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202009 LHN AR 253 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202005 LHN AR 362 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202004 LHN AR 683 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202003 LHN AR 744 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202002 LHN AR 686 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
202001 LHN AR 743 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
201912 LHN AR 744 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
201911 LHN AR 712 -139 -141 -143 -145 -147 -148 -149 -150 -151 -152 -153 -154 -154 -154 -157 -157 -157 -158 -160 -159 -159 -156 -153 -154 -151
201910 LHN AR 739 -149 -150 -152 -153 -154 -155 -156 -158 -159 -160 -161 -162 -163 -165 -166 -167 -168 -169 -170 -169 -165 -159 -156 -154 -153
201909 LHN AR 709 -152 -153 -155 -156 -158 -159 -161 -162 -163 -164 -166 -167 -168 -169 -170 -171 -172 -173 -173 -172 -167 -162 -160 -159 -156
201908 LHN AR 739 -149 -150 -153 -154 -155 -158 -159 -160 -161 -162 -165 -166 -168 -169 -170 -172 -173 -173 -174 -173 -169 -164 -163 -161 -159
201907 LHN AR 742 -147 -150 -151 -153 -155 -156 -158 -160 -161 -162 -164 -166 -167 -169 -169 -171 -171 -172 -172 -171 -166 -163 -164 -164 -160
201906 LHN AR 689 -146 -147 -149 -150 -152 -154 -156 -156 -158 -159 -161 -162 -164 -165 -167 -168 -169 -170 -171 -171 -167 -164 -163 -163 -159
201905 LHN AR 723 -146 -147 -148 -150 -152 -153 -155 -156 -157 -158 -160 -161 -163 -164 -165 -167 -168 -169 -170 -169 -166 -163 -161 -160 -157
201904 LHN AR 720 -146 -147 -149 -150 -152 -153 -154 -155 -157 -157 -159 -160 -161 -163 -164 -165 -166 -167 -168 -168 -165 -163 -160 -158 -155
201903 LHN AR 742 -145 -147 -148 -149 -151 -152 -154 -155 -157 -158 -159 -160 -161 -162 -163 -164 -165 -166 -167 -167 -164 -159 -157 -158 -155
201902 LHN AR 669 -145 -147 -148 -148 -150 -151 -153 -155 -156 -157 -158 -160 -161 -162 -164 -165 -167 -167 -168 -167 -163 -159 -157 -157 -154
201901 LHN AR 744 -144 -145 -146 -148 -149 -151 -152 -154 -155 -157 -158 -159 -160 -161 -163 -164 -165 -166 -167 -166 -163 -159 -155 -155 -154
201812 LHN AR 723 -146 -148 -149 -151 -152 -154 -155 -156 -158 -159 -160 -161 -163 -164 -165 -166 -167 -168 -168 -167 -162 -158 -155 -153 -151
201811 LHN AR 710 -143 -144 -146 -147 -149 -151 -153 -154 -155 -156 -158 -160 -161 -162 -164 -165 -166 -167 -167 -166 -161 -157 -154 -155 -154
201810 LHN AR 704 -145 -146 -148 -149 -150 -152 -153 -155 -155 -157 -158 -159 -160 -161 -162 -164 -165 -166 -167 -167 -164 -159 -157 -155 -152
201809 LHN AR 673 -144 -146 -148 -150 -150 -153 -154 -155 -157 -158 -160 -162 -163 -164 -165 -167 -168 -169 -169 -168 -165 -161 -159 -158 -157
201808 LHN AR 698 -146 -147 -148 -150 -152 -152 -154 -156 -158 -160 -161 -162 -164 -166 -167 -169 -170 -171 -171 -171 -168 -165 -163 -163 -161
201807 LHN AR 676 -145 -147 -149 -150 -152 -153 -155 -156 -158 -160 -162 -164 -165 -167 -168 -169 -170 -171 -172 -170 -167 -165 -164 -163 -159
201806 LHN AR 703 -146 -148 -150 -151 -154 -155 -157 -158 -160 -162 -163 -165 -167 -168 -169 -170 -171 -172 -173 -171 -168 -163 -163 -163 -160
201805 LHN AR 691 -141 -143 -145 -147 -148 -150 -151 -152 -153 -154 -156 -157 -158 -159 -161 -163 -164 -165 -166 -165 -163 -160 -159 -158 -155
201804 LHN AR 712 -141 -143 -144 -145 -147 -149 -149 -151 -152 -154 -155 -156 -158 -159 -160 -161 -162 -163 -164 -163 -161 -157 -155 -155 -153
201803 LHN AR 744 -141 -142 -143 -145 -146 -147 -148 -149 -150 -151 -152 -154 -154 -156 -157 -158 -160 -160 -162 -162 -159 -156 -153 -152 -151
201802 LHN AR 61 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999