F03A-TA , 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. 268s 228s 193s 164s 139s 118s 100s 85s 72s 61s 52s 44s 37s 32s 27s 23s 19s 16s 14s 12s 10s
200811 LHN AR 286 -132 -133 -135 -135 -137 -138 -139 -141 -141 -142 -144 -145 -147 -149 -151 -152 -153 -151 -149 -146 -143
200810 LHN AR 743 -137 -139 -141 -141 -144 -146 -147 -148 -150 -152 -152 -154 -156 -158 -158 -158 -156 -152 -150 -148 -146
200809 LHN AR 695 -136 -138 -140 -140 -142 -144 -145 -146 -148 -150 -150 -152 -154 -155 -156 -157 -156 -153 -152 -151 -149
200808 LHN AR 719 -135 -137 -138 -139 -141 -142 -144 -145 -146 -148 -149 -151 -152 -153 -154 -155 -155 -154 -153 -153 -150
200807 LHN AR 744 -133 -134 -134 -135 -136 -138 -139 -141 -141 -143 -144 -145 -146 -149 -150 -151 -152 -152 -152 -153 -149
200806 LHN AR 695 -133 -134 -135 -136 -137 -138 -139 -139 -142 -143 -146 -147 -148 -149 -150 -151 -151 -149 -152 -153 -148
200805 LHN AR 717 -135 -135 -137 -137 -138 -140 -141 -142 -144 -145 -146 -148 -149 -150 -151 -153 -153 -152 -152 -150 -147
200804 LHN AR 710 -136 -137 -139 -139 -142 -142 -144 -145 -146 -147 -149 -150 -152 -154 -155 -156 -155 -152 -151 -149 -146
200803 LHN AR 721 -136 -137 -139 -141 -141 -143 -144 -146 -148 -149 -150 -151 -152 -154 -156 -156 -154 -150 -147 -146 -144
200802 LHN AR 696 -135 -137 -138 -140 -141 -142 -143 -144 -146 -148 -149 -150 -152 -153 -154 -154 -150 -147 -144 -143 -139
200801 LHN AR 585 -135 -136 -138 -139 -141 -142 -144 -145 -147 -149 -151 -151 -154 -154 -156 -156 -154 -148 -144 -144 -141
200712 LHN AR 519 -135 -137 -139 -140 -141 -142 -145 -146 -147 -148 -149 -151 -153 -154 -156 -156 -153 -149 -146 -145 -141
200711 LHN AR 667 -139 -141 -142 -145 -146 -147 -149 -151 -152 -154 -154 -155 -157 -158 -160 -159 -154 -149 -148 -147 -143
200710 LHN AR 726 -139 -140 -142 -143 -144 -146 -147 -149 -150 -151 -153 -155 -156 -158 -159 -160 -158 -152 -148 -146 -145
200709 LHN AR 625 -137 -139 -141 -141 -144 -146 -147 -148 -149 -151 -152 -154 -155 -157 -158 -158 -155 -151 -151 -149 -146
200708 LHN AR 724 -138 -139 -139 -141 -142 -143 -145 -147 -147 -149 -150 -152 -153 -155 -156 -157 -156 -154 -154 -155 -151
200707 LHN AR 731 -134 -136 -137 -138 -140 -141 -142 -143 -144 -146 -147 -149 -149 -151 -152 -153 -153 -153 -154 -155 -151
200706 LHN AR 662 -135 -136 -138 -139 -140 -141 -142 -144 -145 -146 -148 -150 -151 -153 -155 -156 -156 -153 -154 -156 -151
200705 LHN AR 738 -136 -138 -139 -140 -141 -141 -143 -145 -146 -147 -149 -150 -151 -152 -155 -156 -154 -151 -153 -153 -148
200704 LHN AR 692 -135 -136 -137 -139 -140 -141 -142 -144 -144 -147 -147 -148 -149 -151 -151 -151 -150 -147 -146 -145 -142
200703 LHN AR 677 -137 -139 -140 -141 -143 -144 -146 -147 -148 -149 -150 -152 -154 -155 -156 -157 -155 -150 -150 -147 -143
200702 LHN AR 666 -136 -137 -140 -140 -141 -142 -145 -146 -148 -149 -151 -152 -153 -155 -156 -156 -153 -150 -147 -146 -143
200701 LHN AR 583 -136 -138 -139 -141 -143 -144 -145 -147 -148 -150 -151 -153 -155 -156 -158 -157 -152 -146 -146 -145 -142
200612 LHN AR 657 -134 -135 -137 -139 -139 -141 -142 -144 -145 -147 -149 -150 -152 -153 -155 -155 -152 -148 -145 -144 -141
200611 LHN AR 535 -129 -131 -131 -134 -134 -136 -137 -138 -139 -140 -142 -143 -145 -146 -147 -148 -149 -147 -145 -142 -142
200610 LHN AR 744 -138 -140 -141 -143 -145 -146 -147 -147 -149 -151 -152 -153 -154 -156 -157 -158 -155 -152 -149 -148 -147
200609 LHN AR 720 -137 -139 -140 -141 -143 -144 -146 -148 -149 -151 -152 -153 -155 -156 -157 -157 -154 -150 -151 -150 -145
200608 LHN AR 744 -132 -134 -134 -136 -137 -139 -140 -142 -142 -144 -145 -146 -148 -149 -150 -151 -152 -150 -152 -152 -150
200607 LHN AR 742 -134 -135 -136 -137 -139 -139 -142 -143 -144 -146 -147 -148 -149 -151 -152 -153 -153 -152 -154 -153 -148
200606 LHN AR 690 -134 -135 -137 -138 -139 -140 -141 -142 -144 -146 -146 -148 -150 -152 -153 -154 -152 -151 -153 -154 -145
200605 LHN AR 736 -135 -136 -137 -138 -139 -140 -141 -143 -144 -145 -146 -148 -149 -151 -152 -152 -153 -151 -151 -150 -146
200604 LHN AR 672 -138 -140 -141 -143 -144 -145 -146 -148 -149 -151 -151 -153 -155 -157 -158 -158 -155 -150 -150 -148 -144
200603 LHN AR 744 -134 -136 -137 -138 -140 -141 -142 -143 -144 -146 -147 -148 -149 -151 -152 -153 -153 -150 -147 -146 -144
200602 LHN AR 667 -133 -135 -136 -137 -139 -139 -141 -142 -144 -146 -146 -148 -149 -151 -152 -153 -149 -144 -144 -144 -141
200601 LHN AR 635 -133 -134 -136 -137 -138 -139 -140 -142 -144 -145 -146 -147 -149 -150 -151 -152 -150 -146 -144 -143 -138