PANJ-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 296 -136 -137 -137 -139 -140 -141 -141 -143 -143 -145 -146 -146 -147 -148 -149 -150 -151 -152 -153 -154 -154 -154 -154 -153 -152
202104 LHN AR 310 -142 -144 -146 -147 -148 -149 -151 -152 -153 -154 -155 -156 -157 -158 -159 -160 -161 -162 -162 -162 -158 -154 -153 -151 -149
202103 LHN AR 114 -139 -142 -144 -145 -145 -148 -148 -149 -151 -151 -152 -153 -154 -154 -157 -158 -158 -159 -160 -161 -157 -151 -150 -150 -148
202012 LHN AR 9 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999
202010 LHN AR 198 -134 -134 -137 -137 -139 -138 -139 -140 -141 -141 -142 -143 -144 -144 -145 -145 -146 -147 -148 -148 -148 -147 -145 -145 -143
202009 LHN AR 302 -131 -131 -133 -134 -135 -135 -136 -138 -138 -139 -140 -141 -142 -143 -144 -145 -145 -147 -147 -148 -147 -147 -147 -146 -146
202008 LHN AR 67 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999
202007 LHN AR 134 -113 -118 -120 -122 -127 -131 -133 -133 -138 -140 -142 -144 -144 -146 -147 -148 -149 -151 -152 -153 -152 -152 -154 -153 -149
202006 LHN AR 332 -114 -118 -120 -122 -128 -132 -134 -135 -140 -142 -145 -146 -147 -150 -151 -153 -154 -156 -156 -157 -156 -155 -155 -155 -153
202005 LHN AR 101 -125 -130 -131 -134 -137 -140 -141 -142 -147 -149 -150 -152 -151 -153 -155 -156 -157 -159 -160 -161 -160 -156 -154 -152 -151
202004 LHN AR 52 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999
202002 LHN AR 284 -126 -131 -133 -135 -139 -143 -145 -146 -150 -152 -155 -156 -158 -159 -161 -162 -164 -164 -165 -163 -158 -153 -150 -149 -147
202001 LHN AR 333 -127 -131 -132 -135 -139 -142 -144 -145 -149 -151 -153 -154 -156 -157 -159 -161 -162 -163 -163 -161 -155 -150 -147 -148 -144
201912 LHN AR 211 -128 -131 -134 -136 -140 -143 -146 -147 -150 -152 -154 -156 -157 -158 -160 -161 -163 -163 -163 -161 -156 -150 -146 -145 -143
201908 LHN AR 158 -146 -148 -150 -151 -152 -153 -154 -155 -156 -157 -158 -159 -160 -160 -162 -163 -164 -165 -165 -165 -160 -157 -156 -156 -153
201907 LHN AR 388 -143 -145 -147 -150 -151 -151 -152 -153 -154 -155 -156 -157 -158 -158 -160 -161 -162 -162 -163 -162 -159 -155 -157 -158 -154
201906 LHN AR 468 -141 -142 -145 -147 -149 -151 -152 -153 -153 -155 -156 -157 -157 -158 -160 -161 -162 -162 -163 -163 -161 -157 -155 -155 -152
201905 LHN AR 721 -139 -142 -143 -145 -148 -150 -152 -152 -153 -154 -155 -156 -157 -159 -160 -161 -162 -163 -163 -163 -159 -156 -154 -153 -152
201904 LHN AR 720 -142 -143 -145 -146 -148 -150 -152 -153 -154 -155 -156 -157 -159 -160 -161 -162 -163 -164 -164 -164 -160 -157 -154 -153 -150
201903 LHN AR 743 -146 -147 -148 -150 -151 -153 -155 -156 -157 -158 -159 -160 -161 -162 -164 -165 -165 -167 -167 -165 -159 -154 -151 -151 -148
201902 LHN AR 670 -144 -145 -147 -148 -151 -153 -154 -156 -157 -158 -160 -161 -163 -164 -165 -166 -167 -168 -167 -165 -159 -154 -151 -151 -148
201901 LHN AR 744 -145 -146 -147 -149 -151 -152 -153 -155 -157 -159 -160 -161 -162 -164 -164 -166 -166 -166 -166 -164 -159 -153 -149 -149 -148
201812 LHN AR 727 -145 -147 -148 -150 -152 -153 -155 -157 -158 -158 -159 -161 -162 -164 -165 -166 -166 -167 -166 -163 -158 -152 -148 -146 -145
201811 LHN AR 404 -141 -142 -144 -145 -148 -149 -151 -152 -153 -154 -155 -156 -158 -158 -159 -161 -161 -162 -162 -161 -156 -151 -148 -149 -148
201810 LHN AR 695 -143 -146 -148 -150 -151 -153 -153 -154 -156 -156 -158 -159 -160 -161 -162 -163 -163 -163 -165 -163 -159 -153 -150 -148 -147
201809 LHN AR 220 -140 -144 -145 -148 -150 -152 -154 -155 -156 -157 -158 -160 -161 -162 -163 -164 -165 -165 -164 -162 -159 -155 -151 -149 -147
201808 LHN AR 655 -145 -146 -148 -149 -150 -152 -152 -153 -154 -155 -155 -157 -157 -158 -159 -160 -161 -162 -163 -163 -161 -158 -156 -156 -154
201807 LHN AR 687 -132 -133 -134 -135 -137 -138 -139 -141 -141 -142 -143 -144 -145 -146 -147 -148 -149 -150 -150 -151 -151 -151 -152 -152 -148
201806 LHN AR 530 -113 -116 -118 -120 -122 -124 -127 -128 -130 -131 -132 -132 -132 -132 -132 -132 -131 -131 -131 -130 -129 -129 -128 -128 -128
201805 LHN AR 148 -135 -136 -139 -141 -143 -145 -146 -148 -149 -149 -149 -150 -150 -150 -150 -149 -148 -148 -149 -149 -149 -148 -148 -149 -148
201804 LHN AR 513 -139 -141 -142 -144 -146 -148 -149 -151 -152 -153 -154 -155 -155 -155 -155 -154 -154 -154 -153 -152 -152 -151 -150 -150 -149
201803 LHN AR 682 -149 -151 -152 -154 -155 -155 -157 -158 -158 -160 -160 -161 -162 -162 -163 -164 -165 -165 -166 -164 -162 -158 -154 -153 -153
201802 LHN AR 59 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999