condition mean min max ZT0-3 17225.7 17038.7 17412.7 ZT4-7 13012.599999999999 13012.599999999999 13012.599999999999 ZT8-11 7801.99 7801.99 7801.99 ZT12-15 0 0 0 ZT16-19 12806.9 12806.9 12806.9 ZT20-23 13373.35 13373.35 13373.35