Data for last 1 month:

Data LAFmax Time LAFmax LAFmin Time LAFmin Lnight Lday Levening LAF10 LAF90 LАden Report
2024-09-12 95.3 dB 11:46:16 47.7 dB 00:05:53 72.4 dB 74.6 dB 0.0 dB 75.2 dB 66.1 dB 81.7 dB
2024-09-11 92.8 dB 14:28:23 47.4 dB 03:44:57 73.2 dB 74.4 dB 71.6 dB 75.2 dB 69.9 dB 0.0 dB
2024-09-10 90.9 dB 08:35:40 46.0 dB 03:52:36 36.7 dB 75.8 dB 73.7 dB 77.0 dB 67.5 dB 0.0 dB
2024-09-09 95.9 dB 16:27:03 48.9 dB 00:00:35 34.5 dB 74.2 dB 71.8 dB 74.8 dB 68.1 dB 0.0 dB
2024-09-08 96.8 dB 08:56:52 47.3 dB 13:18:36 35.6 dB 72.5 dB 72.0 dB 73.6 dB 68.9 dB 0.0 dB
2024-09-07 95.2 dB 14:28:59 48.3 dB 12:20:31 34.7 dB 73.6 dB 72.0 dB 74.4 dB 68.2 dB 0.0 dB
2024-09-06 100.2 dB 11:27:17 48.5 dB 14:06:54 35.4 dB 74.0 dB 71.9 dB 74.6 dB 69.0 dB 0.0 dB
2024-09-05 92.9 dB 12:57:39 49.5 dB 03:05:28 35.2 dB 74.2 dB 72.2 dB 74.9 dB 68.7 dB 0.0 dB
2024-09-04 96.3 dB 11:41:37 49.6 dB 13:44:36 35.3 dB 74.1 dB 72.3 dB 74.8 dB 69.1 dB 0.0 dB
2024-09-03 91.5 dB 07:07:15 50.2 dB 14:15:19 34.8 dB 74.6 dB 72.6 dB 75.2 dB 69.0 dB 0.0 dB
2024-09-02 92.1 dB 00:47:58 49.8 dB 14:59:02 36.0 dB 73.9 dB 73.2 dB 74.8 dB 69.9 dB 0.0 dB
2024-09-01 100.0 dB 17:01:20 50.4 dB 03:50:45 35.6 dB 73.3 dB 72.4 dB 74.3 dB 69.7 dB 0.0 dB
2024-08-31 90.7 dB 05:55:46 50.8 dB 02:26:22 35.3 dB 73.9 dB 72.2 dB 74.7 dB 70.1 dB 0.0 dB
2024-08-30 92.6 dB 11:10:38 50.1 dB 03:51:10 35.8 dB 74.7 dB 73.2 dB 75.5 dB 70.5 dB 0.0 dB
2024-08-29 102.2 dB 13:37:34 50.4 dB 02:55:49 35.7 dB 74.4 dB 72.6 dB 74.9 dB 70.1 dB 0.0 dB
2024-08-28 99.6 dB 06:56:45 48.7 dB 13:11:36 35.6 dB 74.1 dB 72.9 dB 74.8 dB 70.0 dB 0.0 dB
2024-08-27 97.2 dB 09:31:59 50.4 dB 02:20:48 35.2 dB 74.1 dB 72.8 dB 74.8 dB 69.8 dB 0.0 dB
2024-08-26 95.1 dB 13:06:07 51.0 dB 12:49:31 35.4 dB 73.9 dB 72.5 dB 74.6 dB 70.0 dB 0.0 dB
2024-08-25 90.3 dB 12:03:41 50.6 dB 05:10:11 35.5 dB 72.7 dB 72.6 dB 73.6 dB 69.7 dB 0.0 dB
2024-08-24 91.8 dB 07:41:36 50.8 dB 03:12:05 35.3 dB 73.4 dB 72.2 dB 74.1 dB 69.5 dB 0.0 dB
2024-08-23 99.4 dB 07:12:11 51.3 dB 02:07:30 35.6 dB 74.1 dB 72.5 dB 74.7 dB 70.3 dB 0.0 dB
2024-08-22 97.2 dB 15:20:09 50.9 dB 02:33:03 35.6 dB 75.2 dB 72.8 dB 75.3 dB 69.8 dB 0.0 dB
2024-08-21 96.0 dB 17:25:00 50.8 dB 03:04:47 35.8 dB 74.2 dB 72.4 dB 74.8 dB 69.3 dB 0.0 dB
2024-08-20 91.6 dB 12:43:25 51.1 dB 03:22:32 35.5 dB 75.5 dB 72.6 dB 76.7 dB 69.5 dB 0.0 dB
2024-08-19 97.7 dB 02:03:10 51.5 dB 01:41:38 35.8 dB 73.8 dB 72.3 dB 74.5 dB 69.6 dB 0.0 dB
2024-08-18 94.1 dB 16:12:03 50.4 dB 15:34:33 36.1 dB 72.8 dB 72.1 dB 73.7 dB 69.1 dB 0.0 dB
2024-08-17 91.5 dB 16:27:54 50.3 dB 13:59:35 72.7 dB 73.3 dB 72.0 dB 74.0 dB 69.8 dB 0.0 dB
2024-08-16 96.0 dB 10:39:29 51.5 dB 04:20:33 72.8 dB 73.8 dB 72.0 dB 74.4 dB 69.7 dB 0.0 dB
2024-08-15 96.3 dB 16:04:45 51.4 dB 15:48:08 35.1 dB 73.7 dB 73.4 dB 74.3 dB 69.4 dB 0.0 dB
2024-08-14 99.4 dB 16:08:53 51.5 dB 03:03:16 35.2 dB 73.8 dB 73.4 dB 74.5 dB 69.1 dB 0.0 dB
2024-08-13 99.2 dB 13:30:24 37.6 dB 04:54:43 72.6 dB 73.8 dB 72.4 dB 74.5 dB 68.6 dB 0.0 dB
2024-08-12 92.0 dB 07:11:19 38.0 dB 05:03:37 72.6 dB 73.6 dB 72.1 dB 74.3 dB 68.8 dB 0.0 dB


To automated count unit ID 3086: Route I-8, Kalotina - Sofia


Daily indicators:


  L24 = 81.7 dBL2424-hour noise level, which is an indicator of the noise associated with discomfort (defined according to the ”Law for protection against environmental noise”)

  Lnight = 72.4 dBLAnightnight noise level is the A-weighted equivalent noise level averaged over a long period of time, relative to all the night periods in a year, as specified in standard ISO 1996-2:1987

Defined period "night period: (according to the Regulation No 6 of 26 June 2006 for" performance of noise in the environment "): 23- 07 h

  Lday = 74.6 dBInformationLAdaydaily noise level is the A-weighted equivalent noise level averaged over a long period of time, relative to all the day periods during the year, as specified in the standard BDS ISO 1996-2: 1987;

Defined period "day period" (according to Regulation No 6 of 26 June 2006 on "indicators of environmental noise"): 07-19 h.

  Lev. = N/A dBInformationLAeveningevening level of noise is the A-weighted equivalent noise level averaged over a long period of time, relative to all the evening periods in a year, as specified in standard ISO 1996-2: 1987;

Defined period "evening period: (according to the Regulation No 6 of 26 June 2006 for" performance of noise in the environment "): 19 – 23 h.

  LAmax = 95.3 dBInformationLAmaxmaximum A-weighted sound level in decibels [dB (A)].
This is the maximum value of the current A-weighted noise level for a given time interval.

  LAmin = 47.7 dBInformationLAminminimum A-weighted sound level in decibels [dB (A)].
This is the minimum value of the current A-weighted noise level for a given time interval.

  LAF10 = 75.2 dBLAF10The level of noise along a curve and which has exceeded 10% of the measurement time (T).
The parameter is used as a measure of the noise from the main measured (released) source.

  LAF90 = 66.1 dBLAF90The noise level in a curve which is exceeded for 90% of the time of measurement (T).
The parameter is used as an indicator of the ambient (background) noise.