condition mean min max 4 h after light 10.6953005 10.186818 11.203783 8 h after light 7.740898 7.499668 7.982128 12 h after light 7.9706605 7.128086 8.813235 4 h after dark 7.9888715 7.579115 8.398628 8 h after dark 7.611172 7.362031 7.860313 12 h after dark 10.712324 10.712324 10.712324