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Table 5 Spectrophotometry results before and after sun exposure in each experiment type

From: Establishing a minimum PMI for bone sun bleaching in a UK environment with a controlled desert-simulated comparison

Spectrophotometry Before After
Summer
  L 72.38 ± 1.6 66.25 ± 0.5
  A 0.10 ± 0.2 1.31 ± 0.1
  B 10.12 ± 1.2 13.80 ± 0.8
Desert
  L 59.83 ± 0.9 71.06 ± 0.7
  A 7.53 ± 0.2 3.15 ± 0.7
  B 21.20 ± 0.3 16.78 ± 0.7
Winter
  L 62.09 ± 0.5 64.49 ± 0.3
  A 9.66 ± 0.4 2.73 ± 0.4
  B 10.61 ± 0.4 19.31 ± 0.4
  1. (L = lightness 0–100, 0 is black and 100 is white; A = red/green value, + 80 red and − 80 green; B = blue/yellow value, + 80 yellow and − 80 blue)