condition mean min max 4 h after light 5.68604 5.637980000000001 5.755 8 h after light 5.4587433333333335 5.31383 5.613919999999999 12 h after light 5.627306666666667 5.493580000000001 5.7944 4 h after dark 5.496696666666667 5.403230000000001 5.54381 8 h after dark 5.5049866666666665 5.410419999999999 5.58749 12 h after dark 5.5368900000000005 5.46053 5.67274