condition mean min max 4 h after light 10.082126500000001 9.918354 10.245899 8 h after light 9.316806 8.861584 9.772028 12 h after light 9.1093175 9.039084 9.179551 4 h after dark 9.695097 9.577227 9.812967 8 h after dark 9.978282 9.812967 10.143597 12 h after dark 10.982775 10.982775 10.982775