Table 1.

The number of I∕O functions in each HL category at each frequency that were included in the analysis.

	707	1000	1414	2000	2828	4000	5656	8000	Total
−5	2	6	7	5	6	18	12	12	68
0	25	20	36	27	26	37	28	18	217
5	54	53	35	31	37	21	28	29	288
10	32	42	36	36	21	17	19	22	225
15	33	31	22	23	22	14	16	15	176
20	21	21	18	14	16	6	10	12	118
25	19	19	25	11	5	10	8	6	103
30	7	11	12	15	4	8	7	6	70
35	3	11	13	19	19	14	10	3	92
40	2	7	18	16	13	15	8	11	90
45	7	5	7	11	12	13	15	9	79
50	5	4	7	13	14	17	18	15	93
55	1	4	8	8	13	15	17	11	77
60	1	1	1	5	16	29	12	18	83
Total	212	235	245	234	224	234	208	187	1779