S04C-TA , LHZ


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
200709 LHZ AR 66 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999 999
200708 LHZ AR 722 -172 -174 -175 -177 -178 -178 -179 -179 -180 -180 -180 -179 -179 -178 -176 -172 -162 -156 -157 -159 -155
200707 LHZ AR 730 -172 -174 -176 -177 -178 -179 -179 -180 -180 -180 -179 -179 -179 -178 -176 -174 -165 -157 -157 -159 -154
200706 LHZ AR 660 -173 -175 -176 -178 -178 -179 -179 -180 -180 -180 -180 -179 -179 -178 -177 -173 -164 -155 -156 -160 -153
200705 LHZ AR 738 -174 -176 -177 -178 -179 -179 -180 -180 -181 -180 -181 -180 -179 -179 -177 -171 -161 -154 -156 -157 -150
200704 LHZ AR 691 -175 -177 -178 -179 -179 -179 -179 -179 -180 -180 -180 -179 -179 -178 -175 -170 -160 -152 -150 -148 -144
200703 LHZ AR 677 -176 -178 -179 -179 -180 -180 -180 -180 -181 -181 -181 -181 -180 -179 -176 -170 -159 -151 -151 -151 -146
200702 LHZ AR 665 -177 -179 -180 -180 -181 -180 -181 -181 -181 -181 -181 -181 -180 -179 -176 -170 -159 -152 -150 -148 -143
200701 LHZ AR 735 -177 -178 -179 -180 -180 -180 -180 -180 -180 -181 -181 -180 -179 -178 -176 -170 -159 -150 -149 -149 -141
200612 LHZ AR 738 -176 -177 -178 -178 -179 -179 -179 -179 -179 -180 -180 -180 -179 -178 -176 -170 -159 -151 -149 -148 -143
200611 LHZ AR 691 -176 -177 -179 -179 -180 -180 -180 -180 -181 -181 -181 -181 -180 -179 -177 -172 -163 -154 -152 -151 -146
200610 LHZ AR 744 -176 -177 -178 -179 -180 -180 -180 -181 -182 -182 -182 -181 -181 -180 -177 -172 -162 -155 -154 -152 -149
200609 LHZ AR 720 -175 -176 -177 -178 -179 -180 -180 -180 -181 -181 -181 -181 -180 -179 -177 -171 -160 -154 -154 -155 -147
200608 LHZ AR 744 -174 -176 -177 -178 -179 -180 -180 -181 -181 -181 -181 -181 -180 -179 -177 -173 -163 -156 -157 -159 -152
200607 LHZ AR 744 -174 -176 -177 -178 -179 -179 -180 -180 -181 -181 -180 -180 -179 -179 -177 -171 -160 -154 -155 -157 -150
200606 LHZ AR 694 -175 -176 -178 -178 -179 -179 -180 -180 -181 -181 -181 -181 -180 -179 -177 -169 -160 -154 -155 -157 -145
200605 LHZ AR 744 -176 -177 -179 -180 -180 -180 -181 -181 -182 -182 -181 -181 -180 -179 -177 -171 -162 -154 -153 -154 -147
200604 LHZ AR 644 -178 -180 -181 -180 -181 -181 -181 -181 -182 -182 -182 -182 -181 -180 -177 -172 -161 -154 -153 -152 -147
200603 LHZ AR 744 -179 -180 -181 -181 -181 -181 -181 -181 -181 -182 -181 -181 -180 -179 -177 -172 -162 -153 -150 -150 -145
200602 LHZ AR 672 -178 -180 -180 -181 -181 -181 -181 -181 -182 -182 -182 -181 -180 -180 -177 -170 -161 -152 -150 -151 -147
200601 LHZ AR 744 -177 -178 -179 -179 -180 -179 -179 -180 -180 -180 -181 -180 -179 -179 -176 -170 -159 -151 -148 -146 -137