condition mean min max 4 h after light 15.6180665 13.308421 17.927712 8 h after light 12.4681935 11.517386 13.419001 12 h after light 11.1732265 10.829067 11.517386 4 h after dark 10.9945735 10.377457 11.61169 8 h after dark 12.241555000000002 12.013782 12.469328 12 h after dark 11.187496 11.187496 11.187496