condition mean min max ZT0-3 6984.55 6984.55 6984.55 ZT4-7 10667.8 10667.8 10667.8 ZT8-11 10646.05 10646.05 10646.05 ZT12-15 6846.95 6846.95 6846.95 ZT16-19 4756.450000000001 4756.450000000001 4756.450000000001 ZT20-23 5955.15 5955.15 5955.15