Table 4 Thermal stress assessment scale for children based on UTCI (a sensation obtained through linear regression).

From: Outdoor thermal comfort benchmarks and optimization design for children in open parks of hot summer and cold winter region

Thermal stress

TSV

UTCI (℃)

UTCI, children(℃)

Extreme cold stress

<-4.5

<-40

<-50.0a

Very strong cold stress

-4.5—-3.5

-40—-27

-50.0—-35.5 a

Strong cold stress

-3.5—-2.5

-27—-13

-35.5—-21.0 a

Moderate cold stress

-2.5—-1.5

-13—0

-21.0—-6.5 a

Slight cold stress

-1.5—-0.5

0—9

-6.5—7.9 a

No thermal stress

-0.5—0.5

9—26

7.9—22.4

Moderate heat stress

0.5—2.5

26—32

22.4—51.4a

Strong heat stress

2.5—3.5

32—38

51.4—65.9 a

Very strong heat stress

3.5—4.5

38—46

65.9—80.4 a

Extreme heat stress

> 4.5

> 46

> 80.4 a