Table 1 Summary of characteristics of schools and kindergartens included in the study for measuring ENP around them.
# of Tehran districts | # of schools and kindergartens included | # of schools and kindergartens located along streets/highways on two sides | # of schools and kindergartens with double-glazed window | Leq (dBA): Average (Min-Max) | National standard |
|---|---|---|---|---|---|
1 | 10 | 4 | 1 | 69.7 (59.3–73.2) | The ambient noise levels for residential, residential-commercial, commercial, residential-industrial, and industrial areas during the day (7:00–22:00) are 55, 60, 65, 70, and 75 dB(A), respectively. |
2 | 38 | 20 | 6 | 67.4 (49.9–77.4) | |
3 | 16 | 3 | 0 | 69.6 (59.5–79.8) | |
4 | 17 | 7 | 0 | 66.4 (57.7–79.3) | |
5 | 26 | 12 | 0 | 68.1 (57.4–76.5) | |
6 | 24 | 15 | 1 | 71.9 (55.8–76.3) | |
7 | 25 | 16 | 1 | 70.3 (61.2–74.5) | |
8 | 18 | 8 | 0 | 70.6 (55.8–81.1) | |
9 | 15 | 3 | 2 | 69.0 (52.8–78.0) | |
10 | 14 | 2 | 3 | 70.7 (59.0-77.4) | |
11 | 14 | 1 | 2 | 73.3 (68.2–76.8) | |
12 | 13 | 2 | 0 | 75.4 (72.3–78.1) | |
13 | 2 | 0 | 0 | 74.8 (73.1–76.2) | |
14 | 8 | 6 | 1 | 74.4 (62.3–78.2) | |
15 | 6 | 3 | 3 | 74.5 (58.6–79.6) | |
16 | 8 | 1 | 3 | 75.1 (68.1–79.1) | |
17 | 15 | 4 | 3 | 71.2 (68.3–74.5) | |
18 | 11 | 4 | 2 | 73.2 (60.5–78.9) | |
19 | 8 | 4 | 3 | 69.5 (61.6–77.5) | |
20 | 6 | 3 | 0 | 75.1 (68.0-81.3) | |
21 | 6 | 2 | 0 | 70.0 (57.3–74.5) | |
22 | 7 | 5 | 0 | 58.7 (49.5–64.1) |
