condition mean min max ZT0-3 40.5963 40.5963 40.5963 ZT4-7 57.8521915 57.8521915 57.8521915 ZT8-11 94.3889045 94.3889045 94.3889045 ZT12-15 79.40059049999999 79.40059049999999 79.40059049999999 ZT16-19 73.3210385 73.3210385 73.3210385 ZT20-23 53.044959 53.044959 53.044959