FDFM-G , LHE-10


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 LHE-10 AR 146 -143 -143 -144 -146 -146 -147 -147 -150 -149 -149 -150 -150 -152 -152 -154 -154 -156 -157 -158 -159 -159 -157 -156 -151 -150
202303 LHE-10 AR 397 -140 -142 -144 -145 -147 -147 -147 -147 -148 -149 -150 -150 -152 -152 -153 -154 -155 -155 -156 -157 -156 -151 -146 -145 -148
202302 LHE-10 AR 669 -137 -138 -138 -138 -139 -139 -139 -139 -139 -140 -140 -141 -141 -142 -142 -142 -143 -143 -144 -144 -145 -145 -146 -146 -145
202301 LHE-10 AR 744 -138 -138 -140 -141 -141 -141 -141 -141 -142 -142 -143 -143 -143 -143 -144 -144 -144 -145 -145 -146 -147 -148 -148 -147 -145
202212 LHE-10 AR 633 -140 -142 -144 -145 -147 -148 -148 -149 -149 -151 -150 -150 -151 -151 -152 -152 -153 -154 -154 -154 -152 -148 -143 -142 -144
202211 LHE-10 AR 687 -137 -137 -139 -138 -139 -139 -139 -140 -141 -141 -142 -142 -142 -143 -144 -144 -145 -146 -147 -147 -148 -148 -147 -146 -146
202210 LHE-10 AR 741 -138 -140 -141 -142 -143 -143 -144 -145 -144 -146 -146 -146 -147 -148 -148 -149 -150 -150 -151 -152 -152 -151 -152 -152 -151
202209 LHE-10 AR 720 -140 -142 -144 -146 -148 -148 -150 -151 -151 -152 -153 -154 -154 -155 -156 -156 -157 -157 -158 -158 -158 -156 -155 -153 -151
202208 LHE-10 AR 687 -138 -139 -139 -140 -141 -142 -142 -143 -143 -144 -145 -145 -146 -146 -147 -147 -148 -149 -149 -151 -151 -152 -153 -154 -152
202207 LHE-10 AR 700 -136 -137 -136 -136 -137 -137 -137 -137 -137 -137 -138 -139 -138 -139 -139 -140 -140 -141 -142 -142 -143 -144 -145 -147 -146
202206 LHE-10 AR 709 -138 -138 -139 -139 -140 -140 -141 -140 -141 -141 -141 -142 -142 -142 -143 -143 -144 -145 -145 -146 -147 -148 -149 -150 -149
202205 LHE-10 AR 516 -139 -139 -139 -140 -140 -139 -140 -140 -140 -140 -140 -141 -142 -142 -143 -143 -144 -145 -146 -147 -148 -149 -150 -150 -149
202204 LHE-10 AR 324 -137 -139 -139 -139 -140 -140 -140 -140 -140 -141 -141 -141 -141 -141 -141 -142 -141 -142 -142 -142 -143 -143 -144 -146 -146
202203 LHE-10 AR 744 -137 -137 -137 -137 -137 -137 -138 -138 -138 -139 -139 -139 -140 -140 -140 -141 -141 -141 -142 -143 -143 -143 -144 -145 -143
202202 LHE-10 AR 672 -138 -140 -140 -141 -141 -141 -141 -141 -142 -142 -142 -142 -142 -142 -143 -143 -144 -144 -145 -146 -146 -147 -147 -146 -144
202201 LHE-10 AR 739 -139 -139 -140 -141 -141 -142 -142 -142 -142 -142 -143 -143 -143 -144 -144 -144 -146 -146 -146 -147 -148 -148 -148 -148 -147
202112 LHE-10 AR 743 -137 -138 -139 -139 -139 -139 -139 -140 -141 -141 -141 -141 -142 -142 -143 -143 -143 -143 -144 -144 -145 -145 -145 -146 -145
202111 LHE-10 AR 712 -140 -141 -142 -143 -144 -144 -145 -145 -145 -145 -146 -146 -147 -147 -148 -148 -149 -149 -149 -150 -151 -151 -148 -148 -148
202110 LHE-10 AR 744 -140 -141 -142 -143 -145 -144 -146 -146 -147 -147 -148 -149 -150 -150 -151 -152 -152 -153 -154 -155 -155 -152 -151 -151 -151
202109 LHE-10 AR 227 -141 -144 -147 -147 -148 -149 -149 -149 -150 -151 -150 -152 -154 -153 -153 -154 -155 -156 -157 -158 -157 -153 -149 -150 -151
202108 LHE-10 AR 510 -139 -139 -141 -142 -142 -143 -143 -144 -144 -145 -146 -146 -147 -148 -148 -149 -150 -149 -149 -150 -149 -149 -150 -152 -151
202107 LHE-10 AR 624 -136 -137 -137 -137 -137 -138 -139 -139 -139 -139 -140 -141 -142 -142 -142 -143 -144 -144 -145 -145 -146 -147 -148 -150 -148
202106 LHE-10 AR 701 -138 -138 -138 -139 -139 -140 -140 -140 -140 -140 -141 -141 -141 -142 -142 -142 -143 -144 -144 -145 -146 -147 -148 -148 -147
202105 LHE-10 AR 744 -138 -138 -139 -139 -140 -140 -140 -140 -140 -141 -141 -141 -141 -142 -143 -143 -144 -145 -145 -147 -147 -148 -148 -148 -147
202104 LHE-10 AR 720 -139 -140 -141 -142 -142 -144 -144 -144 -144 -145 -145 -146 -146 -147 -148 -148 -149 -150 -151 -152 -152 -151 -150 -149 -149
202103 LHE-10 AR 634 -138 -139 -140 -140 -141 -141 -141 -141 -141 -141 -141 -141 -142 -142 -142 -143 -143 -143 -144 -144 -145 -145 -147 -146 -145