condition mean min max ZT0-3 11.490124999999999 10.809999999999999 12.17025 ZT4-7 9.167075 9.167075 9.167075 ZT8-11 11.59855 11.59855 11.59855 ZT12-15 0 0 0 ZT16-19 14.137550000000001 14.137550000000001 14.137550000000001 ZT20-23 10.773 10.773 10.773