condition mean min max ZT0-3 1.26043 1.19278 1.32808 ZT4-7 1.249175 1.249175 1.249175 ZT8-11 1.4110299999999998 1.4110299999999998 1.4110299999999998 ZT12-15 0 0 0 ZT16-19 1.266685 1.266685 1.266685 ZT20-23 1.234035 1.234035 1.234035