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.
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 | 8s | 7s | 6s | 5s | 4s |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
201006 | LHN-10 | AR | 428 | -156 | -157 | -157 | -158 | -161 | -162 | -164 | -165 | -168 | -169 | -170 | -172 | -173 | -175 | -174 | -172 | -166 | -161 | -157 | -161 | -162 | -156 | -147 | -145 | -142 | -138 |
201005 | LHN-10 | AR | 2976 | -162 | -164 | -166 | -167 | -169 | -171 | -172 | -174 | -176 | -177 | -178 | -179 | -179 | -179 | -177 | -174 | -169 | -163 | -163 | -164 | -162 | -155 | -152 | -147 | -141 | -139 |
201004 | LHN-10 | AR | 2878 | -161 | -163 | -165 | -167 | -168 | -170 | -171 | -173 | -174 | -175 | -176 | -177 | -177 | -177 | -176 | -174 | -168 | -163 | -163 | -162 | -161 | -155 | -149 | -145 | -137 | -133 |
201003 | LHN-10 | AR | 2975 | -161 | -163 | -165 | -168 | -170 | -171 | -172 | -173 | -174 | -176 | -177 | -177 | -177 | -176 | -174 | -171 | -166 | -161 | -160 | -160 | -160 | -153 | -146 | -141 | -135 | -132 |
201002 | LHN-10 | AR | 2688 | -159 | -162 | -163 | -164 | -166 | -168 | -169 | -171 | -172 | -173 | -174 | -175 | -175 | -175 | -174 | -171 | -165 | -160 | -159 | -159 | -158 | -153 | -144 | -137 | -134 | -129 |
201001 | LHN-10 | AR | 2976 | -146 | -148 | -151 | -153 | -155 | -156 | -158 | -160 | -161 | -162 | -164 | -165 | -166 | -167 | -167 | -166 | -161 | -156 | -154 | -155 | -155 | -151 | -141 | -137 | -131 | -128 |
200912 | LHN-10 | AR | 2975 | -153 | -156 | -157 | -160 | -161 | -163 | -165 | -167 | -168 | -169 | -171 | -172 | -172 | -172 | -171 | -168 | -162 | -156 | -155 | -155 | -156 | -149 | -141 | -137 | -134 | -129 |
200911 | LHN-10 | AR | 2880 | -150 | -153 | -156 | -158 | -160 | -162 | -164 | -165 | -167 | -168 | -169 | -171 | -172 | -172 | -171 | -168 | -163 | -158 | -155 | -155 | -155 | -151 | -144 | -137 | -133 | -130 |
200910 | LHN-10 | AR | 2976 | -151 | -154 | -156 | -158 | -160 | -162 | -163 | -165 | -166 | -167 | -169 | -170 | -170 | -170 | -170 | -168 | -163 | -158 | -157 | -156 | -155 | -150 | -146 | -139 | -133 | -127 |
200909 | LHN-10 | AR | 2880 | -149 | -150 | -152 | -154 | -156 | -158 | -160 | -161 | -163 | -164 | -166 | -168 | -169 | -170 | -170 | -169 | -166 | -161 | -160 | -158 | -157 | -153 | -149 | -145 | -138 | -133 |
200908 | LHN-10 | AR | 2976 | -154 | -156 | -157 | -159 | -161 | -163 | -165 | -166 | -168 | -169 | -171 | -172 | -173 | -173 | -173 | -172 | -167 | -163 | -162 | -163 | -161 | -157 | -153 | -148 | -141 | -139 |
200907 | LHN-10 | AR | 2974 | -156 | -157 | -159 | -160 | -162 | -164 | -166 | -167 | -168 | -170 | -171 | -172 | -172 | -172 | -172 | -171 | -167 | -163 | -163 | -165 | -162 | -158 | -153 | -149 | -142 | -140 |
200906 | LHN-10 | AR | 2880 | -158 | -159 | -161 | -162 | -164 | -166 | -168 | -170 | -171 | -173 | -174 | -175 | -176 | -176 | -176 | -174 | -169 | -163 | -163 | -164 | -162 | -157 | -153 | -148 | -138 | -140 |
200905 | LHN-10 | AR | 2976 | -156 | -159 | -161 | -163 | -165 | -167 | -168 | -170 | -172 | -173 | -175 | -176 | -177 | -177 | -176 | -173 | -168 | -162 | -161 | -160 | -160 | -156 | -149 | -146 | -140 | -136 |
200904 | LHN-10 | AR | 2880 | -156 | -159 | -161 | -163 | -165 | -167 | -168 | -170 | -171 | -172 | -174 | -175 | -175 | -176 | -175 | -173 | -168 | -163 | -162 | -161 | -160 | -155 | -149 | -144 | -138 | -131 |
200903 | LHN-10 | AR | 2976 | -152 | -154 | -157 | -159 | -161 | -163 | -165 | -166 | -168 | -169 | -171 | -172 | -173 | -174 | -173 | -171 | -166 | -161 | -158 | -158 | -160 | -154 | -145 | -139 | -134 | -130 |
200902 | LHN-10 | AR | 2541 | -152 | -154 | -156 | -158 | -160 | -162 | -164 | -165 | -167 | -168 | -170 | -171 | -172 | -173 | -173 | -170 | -164 | -159 | -158 | -158 | -160 | -153 | -143 | -136 | -132 | -128 |
200901 | LHN-10 | AR | 2974 | -149 | -152 | -154 | -156 | -158 | -159 | -161 | -162 | -164 | -165 | -167 | -168 | -170 | -170 | -169 | -167 | -160 | -154 | -153 | -153 | -152 | -150 | -140 | -132 | -130 | -129 |