condition mean min max ZT0-3 92.202781 92.202781 92.202781 ZT4-7 94.813879 94.813879 94.813879 ZT8-11 62.248664 62.248664 62.248664 ZT12-15 205.76737500000002 205.76737500000002 205.76737500000002 ZT16-19 106.3570375 106.3570375 106.3570375 ZT20-23 215.13311299999998 215.13311299999998 215.13311299999998