condition mean min max ZT0-3 71.26320000000001 71.26320000000001 71.26320000000001 ZT4-7 85.1067 85.1067 85.1067 ZT8-11 51.97585 51.97585 51.97585 ZT12-15 44.6834 44.6834 44.6834 ZT16-19 33.4892 33.4892 33.4892 ZT20-23 48.6717 48.6717 48.6717