condition mean min max ZT0-3 4742.299999999999 4742.299999999999 4742.299999999999 ZT4-7 6042.0 6042.0 6042.0 ZT8-11 5675.1 5675.1 5675.1 ZT12-15 5520.55 5520.55 5520.55 ZT16-19 5026.2 5026.2 5026.2 ZT20-23 4968.6 4968.6 4968.6