condition mean min max ZT0-3 17.4925 17.4925 17.4925 ZT4-7 14.83495 14.83495 14.83495 ZT8-11 5.14572 5.14572 5.14572 ZT12-15 6.26693 6.26693 6.26693 ZT16-19 9.701865000000002 9.701865000000002 9.701865000000002 ZT20-23 11.532399999999999 11.532399999999999 11.532399999999999