condition mean min max ZT0-3 328.35 328.35 328.35 ZT4-7 505.5 505.5 505.5 ZT8-11 587.3499999999999 587.3499999999999 587.3499999999999 ZT12-15 619.1 619.1 619.1 ZT16-19 448.05 448.05 448.05 ZT20-23 296.55 296.55 296.55