sleep1 {alr4}

Sleep in mammals

Description

Includes species averages for 62 mammals.

Format

This data frame uses spcies as row lable and contains the following columns:

SWS

Slow wave nondreaming sleep, hrs/day

PS

Paradoxical dreaming sleep, hrs/day

TS

Total sleep, hrs/day

BodyWt

Body weight in kg

BrainWt

Brain weight in g

Life

Maximum life span, years

GP

Gestation time, days

P

Predation index, 1=low,5=hi

SE

Sleep exposure index 1=exposed, 5=protected

D

Danger index, 1=least, 5=most

Source

Allison, T. and Cicchetti, D. (1976). Sleep in Mammals: Ecological and Constitutional Correlates Science, vol. 194, pp. 732-734.

References

Weisberg, S. (2014). Applied Linear Regression, 4th edition. Hoboken NJ: Wiley.

Examples

head(sleep1)