condition mean min max ZT0-3 10.243937500000001 9.727405000000001 10.76047 ZT4-7 11.51635 11.51635 11.51635 ZT8-11 8.886894999999999 8.886894999999999 8.886894999999999 ZT12-15 0 0 0 ZT16-19 10.9981 10.9981 10.9981 ZT20-23 8.96584 8.96584 8.96584