condition mean min max ZT0-3 3067.37 2781.6000000000004 3353.14 ZT4-7 3014.325 3014.325 3014.325 ZT8-11 2130.47 2130.47 2130.47 ZT12-15 0 0 0 ZT16-19 1735.9299999999998 1735.9299999999998 1735.9299999999998 ZT20-23 2408.4300000000003 2408.4300000000003 2408.4300000000003