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Table 2 Means and standard deviations for integrated exposure to illuminance and irradiance in the range 450–500 nm across the seasons

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

  

Season

  

Winter

Spring

Summer

Autumn

Light exposure

Mean (lux*min)

91,366

356,368

1,394,200

477,165

N = 15

SD (lux*min)

41,984

190,282

800,295

280,363

Light exposure 450–500 nm

Mean (μW/cm2*min)

9919

31,153

114,027

38,846

N = 14

SD (μW/cm2*min)

9590

26,400

118,749

39,721