condition mean min max ZT0-3 2992.95 2992.95 2992.95 ZT4-7 4803.3 4803.3 4803.3 ZT8-11 4526.25 4526.25 4526.25 ZT12-15 3965.05 3965.05 3965.05 ZT16-19 3194.8 3194.8 3194.8 ZT20-23 2972.8 2972.8 2972.8