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Table 6 Means and standard deviations for annual mean cortisol concentration at the six time points during the day

From: Annual variation in daily light exposure and circadian change of melatonin and cortisol concentrations at a northern latitude with large seasonal differences in photoperiod length

  

Time of the day

(hh:mm)

  

11:00

15:00

19:00

23:00

3:00

7:00

Cortisol concentration

Mean (pg/ml)

0.19

0.19

0.11

0.20

0.16

0.50

N = 15

SD (pg/ml)

0.20

0.28

0.13

0.45

0.13

0.31