Table 3.
The number of measurement sites, the total number of measured noise levels, Leq,1-h, L10,1-h, L90,1-h, and noise climate (NC) for nighttime noise measurements
| Noise parameters | ASR1 | ASR2 | ASR3 | ASR4 | ASR5 |
|---|---|---|---|---|---|
| No. of sites | 10 | 11 | 10 | 7 | 8 |
| No. of noise measurements | 20 | 22 | 20 | 14 | 16 |
| Leq,1-h in dBA | |||||
| Range | 44.2-64.0 | 45.6-62.3 | 43.1-63.1 | 56.6-63.8 | 47.0-60.2 |
| Mean (SD) | 54.4 (5.1) | 52.9 (4.8) | 52.6 (5.7) | 60.5 (2.2) | 53.6 (5.3) |
| L10,1-h in dBA | |||||
| Range | 46.1-69.5 | 46.4-69.1 | 44.9-71.0 | 58.2-80.6 | 48.2-63.7 |
| Mean (SD) | 56.9 (6.3) | 55.0 (5.2) | 58.7 (6.6) | 65.2 (6.1) | 57.6 (5.5) |
| L90,1-h in dBA | |||||
| Range | 41.4-53.1 | 44.5-53.2 | 40.8-59.1 | 54.4-59.5 | 44.4-54.9 |
| Mean (SD) | 49.6 (3.4) | 48.1 (2.3) | 48.0 (5.1) | 57.1 (1.8) | 49.7 (3.9) |
| NC in dBA | |||||
| Range | 2.6-17.3 | 1.9-21.8 | 3.2-21.1 | 2.6-22.3 | 2.6-15.9 |
| Mean (SD) | 7.3 (4.2) | 6.9 (5.2) | 10.7 (5.1) | 8.1 (6.0) | 7.9 (3.4) |
| ASR6 | ASR7 | ASR8 | ASR9 | ASR10 | |
| No. of sites | 14 | 12 | 8 | 8 | 7 |
| No. of Leq,1h measurements | 28 | 24 | 16 | 16 | 14 |
| Leq,1-h in dBA | |||||
| Range | 49.9-65.3 | 50.3-65.3 | 46.5-65.3 | 51.4-70.1 | 50.4-63.3 |
| Mean (SD) | 57.2 (4.5) | 57.3 (4.8) | 54.7 (6.7) | 60.8 (5.2) | 58.5 (4.4) |
| L10,1-h in dBA | |||||
| Range | 52.3-67.5 | 51.9-68.9 | 53.0-71.0 | 55.7-74.1 | 52.1-70.5 |
| Mean | 59.1 (4.7) | 60.7 (5.3) | 59.7 (6.7) | 64.1 (5.3) | 62.1 (6.4) |
| L90,1-h in dBA | |||||
| Range | 47.7-64.4 | 45.7-59.6 | 45.6-55.9 | 49.2-61.8 | 47.5-57.5 |
| Mean | 54.3 (4.7) | 51.6 (3.7) | 50.0 (3.9) | 55.9 (4.2) | 53.4 (3.2) |
| NC in dBA | |||||
| Range | 1.2-10.2 | 4.3-20.5 | 1.9-18.1 | 3.7-15.7 | 0.9-14.0 |
| Mean | 4.8 (3.0) | 9.1 (4.3) | 9.6 (5.0) | 8.2 (4.1) | 8.7 (4.7) |
| ASR11 | ASR12 | ASR13 | ASR14 | ASR15 | |
| No. of sites | 10 | 10 | 5 | 11 | 5 |
| No. of Leq,1h measurements | 20 | 20 | 10 | 22 | 10 |
| Leq,1-h in dBA | |||||
| Range | 56.0-70.4 | 56.2-66.6 | 55.8-66.1 | 61.2-74.7 | 57.2-67.7 |
| Mean (SD) | 61.3 (3.8) | 61.4 (3.4) | 60.1 (4.2) | 67.9 (4.1) | 62.6 (3.6) |
| L10,1-h in dBA | |||||
| Range | 57.7-73.6 | 57.6-70.1 | 56.7-69.6 | 64.8-78.1 | 58.1-69.1 |
| Mean | 63.5 (4.6) | 63.8 (3.9) | 63.2 (5.0) | 70.5 (4.4) | 64.6 (4.1) |
| L90,1-h in dBA | |||||
| Range | 51.6-64.7 | 54.6-62.6 | 51.8-59.3 | 54.8-72.0 | 56.4-65.9 |
| Mean | 56.9 (4.1) | 58.2 (3.1) | 56.2 (2.5) | 64.0 (4.2) | 61.5 (3.4) |
| NC in dBA | |||||
| Range | 1.9-15.4 | 2.1-9.8 | 2.4-12.4 | 1.4-11.9 | 1.2-5.6 |
| Mean | 6.6 (3.5) | 5.5 (2.3) | 7.0 (4.0) | 6.5 (3.2) | 3.1 (1.5) |
| ASR16 | ASR17 | ASR18 | ASR19 | ASR20 | |
| No. of sites | 13 | 10 | 10 | 8 | 4 |
| No. of Leq,1h measurements | 26 | 20 | 20 | 16 | 8 |
| Leq,1-h in dBA | |||||
| Range | 50.8-64.9 | 50.5-65.2 | 55.6-72.5 | 54.6-72.8 | 57.2-65.0 |
| Mean (SD) | 58.9 (4.0) | 59.6 (4.7) | 62.2 (5.2) | 64.4 (6.2) | 61.8 (3.2) |
| L10,1-h in dBA | |||||
| Range | 53.2-67.0 | 52.1-68.3 | 57.2-76.3 | 56.8-71.1 | 59.7-67.6 |
| Mean (SD) | 61.0 (4.6) | 62.5 (5.1) | 65.3 (5.9) | 67.4 (7.4) | 63.2 (3.5) |
| L90,1-h in dBA | |||||
| Range | 47.1-61.3 | 47.9-62.7 | 46.6-64.8 | 51.3-66.7 | 53.6-60.6 |
| Mean (SD) | 56.1 (4.0) | 56.4 (4.8) | 57.3 (5.0) | 61.0 (5.4) | 58.1 (3.3) |
| NC in dBA | |||||
| Range | 1.1-10.6 | 3.9-10.0 | 3.1-16.2 | 2.0-13.0 | 2.0-7.2 |
| Mean (SD) | 4.9 (2.7) | 6.1 (2.1) | 8.1 (3.6) | 6.4 (3.6) | 5.0 (2.4) |