Table 2.
Summary of noise metrics for all sites (G and S sites), and for weekday and weekend periods at G sites. Intermittency ratios (IR) use C=5 dB.
| Measure | Period | Weekday All (N=21) |
Weekday G Sites (N=15) |
Weekend G Sites (N=15) |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ave | Min | Max | Ave | Min | Max | Ave | Min | Max | ||
| SPL, averaged and 1-hr 90th percentile | ||||||||||
| Leq(h) | 24-h | 62.1 | 55.3 | 73.8 | 59.0 | 55.3 | 64.0 | 57.6 | 53.3 | 62.2 |
| Leq(h) | Day | 63.0 | 55.8 | 75.4 | 59.6 | 55.8 | 64.9 | 57.5 | 52.9 | 62.3 |
| Leq(h) | Evening | 61.0 | 54.8 | 71.2 | 58.5 | 54.8 | 64.1 | 58.1 | 53.7 | 64.9 |
| Leq(h) | Night | 60.2 | 54.3 | 70.0 | 57.9 | 54.3 | 64.2 | 57.3 | 53.6 | 62.7 |
| L10(h) | - | 64.3 | 57.7 | 76.7 | 61.1 | 57.7 | 68.6 | 58.9 | 54.5 | 64.5 |
| LDN | 24-h | 66.8 | 60.4 | 76.8 | 64.1 | 60.4 | 70.1 | 63.8 | 59.9 | 69.0 |
| LDEN | 24-h | 67.1 | 60.7 | 77.1 | 64.4 | 60.7 | 70.3 | 64.1 | 60.2 | 69.4 |
| Intermittency Ratio | ||||||||||
| IR(5) | 24-h | 39.3 | 5.6 | 86.7 | 28.1 | 5.6 | 60.6 | 23.9 | 1.6 | 54.0 |
| IR(5) | Day | 42.7 | 6.3 | 85.8 | 32.6 | 6.3 | 71.0 | 22.7 | 2.1 | 63.9 |
| IR(5) | Evening | 31.1 | 3.3 | 85.6 | 18.9 | 3.3 | 76.4 | 15.1 | 1.8 | 46.2 |
| IR(5) | Night | 26.9 | 1.9 | 89.4 | 14.6 | 1.9 | 45.2 | 12.8 | 0.4 | 31.3 |
| Time fraction over SPL threshold | ||||||||||
| F50(h) | 24-h | 0.96 | 0.71 | 1.00 | 0.98 | 0.87 | 1.00 | 0.97 | 0.89 | 1.00 |
| F60(h) | 24-h | 0.32 | 0.02 | 0.98 | 0.20 | 0.02 | 0.72 | 0.16 | 0.00 | 0.57 |
| F65(h) | 24-h | 0.12 | 0.00 | 0.64 | 0.03 | 0.00 | 0.14 | 0.02 | 0.00 | 0.05 |
| F70(h) | 24-h | 0.03 | 0.00 | 0.20 | 0.01 | 0.00 | 0.03 | 0.00 | 0.00 | 0.02 |
| Peak SPL, averaged | ||||||||||
| Lp10(h)_ave | 24-h | 60.9 | 55.3 | 71.0 | 58.5 | 55.3 | 63.4 | 57.8 | 53.9 | 62.4 |
| Lp2(h)_ave | 24-h | 63.0 | 56.2 | 75.4 | 59.8 | 56.2 | 65.2 | 59.0 | 55.0 | 64.5 |
| Lp1(h)_ave | 24-h | 63.3 | 56.4 | 76.0 | 60.0 | 56.4 | 65.4 | 59.2 | 55.2 | 64.8 |
| Lp0(h)_ave | 24-h | 63.6 | 56.5 | 76.4 | 60.2 | 56.5 | 65.7 | 59.4 | 55.3 | 65.0 |
| Peak SPL, by percentile | ||||||||||
| Lp10(h)_p10 | - | 67.5 | 60.7 | 80.7 | 64.3 | 60.7 | 69.1 | 62.6 | 58.2 | 68.5 |
| Lp2(h)_p2 | - | 80.3 | 67.7 | 98.7 | 75.0 | 67.7 | 85.9 | 73.6 | 63.5 | 82.6 |
| Lp1(h)_p1 | - | 85.0 | 70.4 | 102.1 | 79.9 | 70.4 | 94.5 | 78.5 | 65.3 | 87.0 |
| Lp0(h)_p0 | - | 93.6 | 72.9 | 105.0 | 89.3 | 72.9 | 104.0 | 88.8 | 69.4 | 103.6 |