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. 2011 Jan 12;88(1):1–13. doi: 10.1007/s11524-010-9501-1

Table 2.

Minimum mean Leq exposure times for three round-trip commute scenarios (h:mm:ss)

  24th street and North Berkeley 24th street and Hayward MacArthur and Daly City
Round-trip mean transit duration 0:57:57 1:13:06 1:02:25
Mean Leq
 ≥70 dBA 0:53:33 1:01:13 0:53:33
 ≥75 dBA 0:51:14 0:45:28 0:51:14
 ≥80 dBA 0:36:27 0:35:44 0:36:27
 ≥85 dBA 0:22:38 0:18:33 0:22:38
 ≥90 dBA 0:08:27 0:06:20 0:08:27
 ≥95 dBA 0:00:00 0:00:00 0:06:34