Monthly ranked lists of long-period noise spectra at broadband stations


The table below links to pages displaying monthly background noise measurements for various stations. The time period for which estimates are available varies. The recent estimates are based on real-time (RT) data. With time, these are replaced by estimates based on quality-conrolled and archived (AR) data.


Vertical 199910 Horizontal 199910
Vertical 199911 Horizontal 199911
Vertical 199912 Horizontal 199912
Vertical 200001 Horizontal 200001
Vertical 200002 Horizontal 200002
Vertical 200003 Horizontal 200003
Vertical 200004 Horizontal 200004
Vertical 200005 Horizontal 200005
Vertical 200006 Horizontal 200006
Vertical 200007 Horizontal 200007
Vertical 200008 Horizontal 200008
Vertical 200009 Horizontal 200009
Vertical 200010 Horizontal 200010
Vertical 200011 Horizontal 200011
Vertical 200012 Horizontal 200012
Vertical 200101 Horizontal 200101
Vertical 200102 Horizontal 200102
Vertical 200103 Horizontal 200103
Vertical 200104 Horizontal 200104
Vertical 200105 Horizontal 200105
Vertical 200106 Horizontal 200106
Vertical 200107 Horizontal 200107
Vertical 200108 Horizontal 200108
Vertical 200109 Horizontal 200109
Vertical 200110 Horizontal 200110
Vertical 200111 Horizontal 200111
Vertical 200112 Horizontal 200112
Vertical 200201 Horizontal 200201
Vertical 200202 Horizontal 200202
Vertical 200203 Horizontal 200203
Vertical 200204 Horizontal 200204
Vertical 200205 Horizontal 200205
Vertical 200206 Horizontal 200206
Vertical 200207 Horizontal 200207
Vertical 200208 Horizontal 200208
Vertical 200209 Horizontal 200209
Vertical 200210 Horizontal 200210
Vertical 200211 Horizontal 200211
Vertical 200212 Horizontal 200212
Vertical 200301 Horizontal 200301
Vertical 200302 Horizontal 200302
Vertical 200303 Horizontal 200303
Vertical 200304 Horizontal 200304
Vertical 200305 Horizontal 200305
Vertical 200306 Horizontal 200306
Vertical 200307 Horizontal 200307
Vertical 200308 Horizontal 200308
Vertical 200309 Horizontal 200309
Vertical 200310 Horizontal 200310
Vertical 200311 Horizontal 200311
Vertical 200312 Horizontal 200312
Vertical 200401 Horizontal 200401
Vertical 200402 Horizontal 200402
Vertical 200403 Horizontal 200403
Vertical 200404 Horizontal 200404
Vertical 200405 Horizontal 200405
Vertical 200406 Horizontal 200406
Vertical 200407 Horizontal 200407
Vertical 200408 Horizontal 200408
Vertical 200409 Horizontal 200409
Vertical 200410 Horizontal 200410
Vertical 200411 Horizontal 200411
Vertical 200412 Horizontal 200412
Vertical 200501 Horizontal 200501
Vertical 200502 Horizontal 200502
Vertical 200503 Horizontal 200503
Vertical 200504 Horizontal 200504
Vertical 200505 Horizontal 200505
Vertical 200506 Horizontal 200506
Vertical 200507 Horizontal 200507
Vertical 200508 Horizontal 200508
Vertical 200509 Horizontal 200509
Vertical 200510 Horizontal 200510
Vertical 200511 Horizontal 200511
Vertical 200512 Horizontal 200512
Vertical 200601 Horizontal 200601
Vertical 200602 Horizontal 200602
Vertical 200603 Horizontal 200603
Vertical 200604 Horizontal 200604
Vertical 200605 Horizontal 200605
Vertical 200606 Horizontal 200606
Vertical 200607 Horizontal 200607
Vertical 200608 Horizontal 200608
Vertical 200609 Horizontal 200609
Vertical 200610 Horizontal 200610
Vertical 200611 Horizontal 200611
Vertical 200612 Horizontal 200612
Vertical 200701 Horizontal 200701
Vertical 200702 Horizontal 200702
Vertical 200703 Horizontal 200703
Vertical 200704 Horizontal 200704
Vertical 200705 Horizontal 200705
Vertical 200706 Horizontal 200706
Vertical 200707 Horizontal 200707
Vertical 200708 Horizontal 200708
Vertical 200709 Horizontal 200709
Vertical 200710 Horizontal 200710
Vertical 200711 Horizontal 200711
Vertical 200712 Horizontal 200712
Vertical 200801 Horizontal 200801
Vertical 200802 Horizontal 200802
Vertical 200803 Horizontal 200803
Vertical 200804 Horizontal 200804
Vertical 200805 Horizontal 200805
Vertical 200806 Horizontal 200806
Vertical 200807 Horizontal 200807
Vertical 200808 Horizontal 200808
Vertical 200809 Horizontal 200809
Vertical 200810 Horizontal 200810
Vertical 200811 Horizontal 200811
Vertical 200812 Horizontal 200812
Vertical 200901 Horizontal 200901
Vertical 200902 Horizontal 200902
Vertical 200903 Horizontal 200903
Vertical 200904 Horizontal 200904
Vertical 200905 Horizontal 200905
Vertical 200906 Horizontal 200906
Vertical 200907 Horizontal 200907
Vertical 200908 Horizontal 200908