Table 1.

Number of participants according to monthly exposure and number of examination and measure points

Examination no	No. of participants Monthly exposure to extreme cold			Measure points
	≤ 16 h	> 16 h	Total	Cumulative	%
1	19	27	46	46	11.6
2	19	27	46	92	11.6
3	18	26	44	136	11.1
4	16	24	40	176	10.1
5	18	24	42	218	10.6
6	16	21	37	255	9.3
7	11	18	29	284	7.3
8	0	11	11	295	2.8
9	0	10	10	305	2.5
10	0	10	10	315	2.5
11	0	10	10	325	2.5
12	0	10	10	335	2.5
13	0	9	9	344	2.3
14	0	9	9	353	2.3
15	0	9	9	362	2.3
16	0	9	9	371	2.3
17	0	8	8	379	2.0
18	0	7	7	386	1.8
19	0	6	6	392	1.5
20	0	6	6	398	1.5