condition mean min max ZT0-3 85.70317499999999 82.26759999999999 89.13875 ZT4-7 51.7466 51.7466 51.7466 ZT8-11 35.763450000000006 35.763450000000006 35.763450000000006 ZT12-15 0 0 0 ZT16-19 49.998400000000004 49.998400000000004 49.998400000000004 ZT20-23 67.84325000000001 67.84325000000001 67.84325000000001