condition mean min max 4 h after light 5.928543333333334 5.90931 5.947690000000001 8 h after light 5.75192 5.58176 6.07867 12 h after light 5.650986666666666 5.5239199999999995 5.889390000000001 4 h after dark 5.2230533333333335 5.01811 5.4271 8 h after dark 5.4771399999999995 5.30676 5.78189 12 h after dark 5.317323333333333 5.22993 5.41176