condition mean min max ZT0-3 0.09543750000000001 0.0 0.2863125 ZT4-7 0.2833785 0.2833785 0.2833785 ZT8-11 0.57605 0.57605 0.57605 ZT12-15 1.3600355 0.886431 1.83364 ZT16-19 0.556385 0.556385 0.556385 ZT20-23 0.605025 0.605025 0.605025