condition mean min max ZT0-3 23.312424999999998 20.969099999999997 25.65575 ZT4-7 3.4152750000000003 3.4152750000000003 3.4152750000000003 ZT8-11 3.32517 3.32517 3.32517 ZT12-15 0 0 0 ZT16-19 11.130099999999999 11.130099999999999 11.130099999999999 ZT20-23 5.605405 5.605405 5.605405