condition mean min max ZT0-3 2032.12565 2032.12565 2032.12565 ZT4-7 4562.0631565 4562.0631565 4562.0631565 ZT8-11 4133.379734 4133.379734 4133.379734 ZT12-15 2696.772335 2696.772335 2696.772335 ZT16-19 3426.749409 3426.749409 3426.749409 ZT20-23 1645.3160644999998 1645.3160644999998 1645.3160644999998