U05C-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
200712 LHN AR 127 -145 -147 -147 -148 -149 -151 -152 -154 -155 -156 -158 -158 -160 -161 -161 -159 -148 -141 -138 -134 -126
200711 LHN AR 669 -149 -150 -151 -152 -153 -154 -155 -156 -158 -159 -160 -161 -162 -163 -163 -161 -155 -145 -140 -138 -134
200710 LHN AR 725 -150 -151 -152 -153 -154 -156 -157 -158 -159 -160 -161 -162 -162 -163 -163 -161 -155 -147 -141 -137 -134
200709 LHN AR 621 -151 -151 -152 -153 -154 -154 -155 -155 -156 -156 -156 -156 -157 -157 -157 -156 -152 -145 -143 -141 -134
200708 LHN AR 719 -152 -153 -153 -154 -154 -155 -155 -156 -156 -157 -157 -157 -157 -157 -157 -157 -153 -148 -146 -145 -142
200707 LHN AR 731 -151 -152 -153 -153 -154 -154 -154 -155 -156 -156 -156 -157 -157 -157 -157 -157 -153 -148 -145 -145 -140
200706 LHN AR 659 -150 -151 -151 -151 -152 -152 -153 -153 -153 -154 -154 -154 -155 -155 -155 -155 -152 -147 -145 -145 -139
200705 LHN AR 737 -150 -150 -151 -151 -152 -152 -153 -153 -154 -154 -155 -155 -155 -155 -156 -155 -151 -146 -144 -144 -137
200704 LHN AR 688 -151 -152 -153 -154 -154 -155 -155 -156 -156 -157 -158 -158 -159 -159 -159 -157 -151 -144 -139 -137 -130
200703 LHN AR 675 -151 -151 -153 -153 -153 -155 -156 -157 -157 -158 -159 -160 -161 -162 -162 -160 -153 -145 -141 -139 -133
200702 LHN AR 665 -144 -146 -147 -148 -149 -150 -152 -153 -154 -156 -157 -158 -159 -160 -161 -159 -152 -144 -139 -136 -131
200701 LHN AR 737 -145 -146 -147 -148 -150 -151 -152 -154 -155 -156 -157 -159 -160 -161 -162 -160 -151 -143 -138 -136 -130
200612 LHN AR 739 -146 -148 -149 -150 -151 -152 -153 -154 -155 -157 -158 -159 -161 -162 -162 -160 -151 -143 -138 -136 -131
200611 LHN AR 719 -147 -148 -149 -150 -151 -151 -152 -153 -154 -155 -157 -158 -159 -160 -160 -160 -154 -146 -142 -138 -133
200610 LHN AR 744 -150 -151 -152 -153 -154 -155 -155 -156 -157 -157 -158 -159 -160 -161 -162 -159 -153 -147 -143 -140 -136
200609 LHN AR 719 -152 -153 -153 -154 -155 -156 -156 -157 -157 -158 -159 -159 -160 -161 -161 -159 -152 -146 -144 -142 -134
200608 LHN AR 744 -152 -152 -153 -154 -154 -155 -155 -155 -155 -155 -156 -156 -157 -157 -158 -158 -153 -148 -146 -145 -139
200607 LHN AR 744 -152 -152 -153 -153 -154 -155 -155 -155 -155 -155 -155 -156 -156 -156 -157 -156 -151 -147 -145 -144 -137
200606 LHN AR 694 -148 -149 -149 -150 -150 -151 -151 -152 -152 -153 -154 -154 -154 -155 -155 -155 -150 -145 -143 -144 -133
200605 LHN AR 744 -149 -150 -151 -151 -152 -153 -153 -153 -154 -154 -155 -155 -156 -156 -156 -155 -151 -145 -142 -141 -134
200604 LHN AR 669 -146 -147 -148 -149 -149 -151 -152 -153 -154 -154 -156 -156 -157 -158 -159 -158 -152 -146 -142 -139 -134
200603 LHN AR 744 -135 -136 -138 -139 -140 -142 -144 -145 -147 -148 -150 -151 -153 -154 -155 -156 -153 -145 -140 -136 -132
200602 LHN AR 672 -134 -136 -137 -139 -139 -141 -143 -144 -146 -147 -149 -150 -152 -153 -155 -155 -151 -144 -140 -139 -135
200601 LHN AR 743 -131 -132 -134 -135 -137 -138 -139 -140 -141 -143 -145 -146 -148 -149 -150 -151 -148 -142 -137 -135 -126