Table 4.
Normality check of the measured noise levels and the percentage of the noise levels greater than ANL at different measured sites
| Daytime noise levels | Nighttime noise levels | ||||
|---|---|---|---|---|---|
| Site: Noise levels that are normally distributed | Acceptable noise level (ANL) | Percentage higher than ANL | Site: Noise levels that are normally distributed | Acceptable noise level (ANL) | Percentage higher than ANL |
| ASR1 | 60 | 27.2 | ASR1 | 50 | 79.9 |
| ASR4 | 65 | 29.1 | ASR4 | 55 | 98.7 |
| ASR5 | 65 | 0.0 | ASR6 | 50 | 94.0 |
| ASR8 | 65 | 0.0 | ASR7 | 55 | 68.4 |
| ASR9 | 70 | 17.0 | ASR9 | 60 | 56.1 |
| ASR11 | 65 | 36.6 | ASR10 | 60 | 36.4 |
| ASR12 | 70 | 5.8 | ASR11 | 55 | 94.1 |
| ASR13 | 70 | 0.0 | ASR13 | 60 | 51.1 |
| ASR14 | 70 | 58.0 | ASR14 | 60 | 96.7 |
| ASR15 | 70 | 11.1 | ASR15 | 60 | 75.3 |
| ASR17 | 65 | 37.6 | ASR16 | 55 | 82.9 |
| ASR18 | 65 | 51.1 | ASR17 | 55 | 82.8 |
| ASR20 | 70 | 11.9 | ASR18 | 55 | 90.9 |
| ASR2 | 65 | 9.1 | ASR20 | 60 | 70.5 |
| ASR3 | 65 | 5.0 | ASR2 | 55 | 18.2 |
| ASR6 | 60 | 57.1 | ASR3 | 55 | 30.0 |
| ASR7 | 65 | 16.7 | ASR5 | 55 | 50.0 |
| ASR10 | 70 | 7.1 | ASR8 | 55 | 37.5 |
| ASR16 | 65 | 15.4 | ASR12 | 60 | 50.0 |
| ASR19 | 70 | 50.0 | ASR19 | 60 | 68.8 |