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
202508 LHN AR 40 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999
202507 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
202506 LHN AR 299 -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
202505 LHN AR 700 -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
202504 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
202503 LHN AR 632 -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
202502 LHN AR 672 -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
202501 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
202412 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
202411 LHN AR 698 -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
202410 LHN AR 744 -57 -59 -61 -62 -64 -65 -66 -67 -72 -73 -73 -73 -73 -74 -73 -72 -72 -73 -74 -74 -77 -80 -84 -83 -84
202409 LHN AR 720 -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
202408 LHN AR 712 -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
202407 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
202406 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
202405 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
202404 LHN AR 720 -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