condition mean min max ZT0-3 4852.5 4852.5 4852.5 ZT4-7 4272.4 4272.4 4272.4 ZT8-11 3729.8500000000004 3729.8500000000004 3729.8500000000004 ZT12-15 4067.2 4067.2 4067.2 ZT16-19 4688.25 4688.25 4688.25 ZT20-23 5457.299999999999 5457.299999999999 5457.299999999999