condition mean min max ZT0-3 206.55 206.55 206.55 ZT4-7 296.4 296.4 296.4 ZT8-11 389.54999999999995 389.54999999999995 389.54999999999995 ZT12-15 444.75 444.75 444.75 ZT16-19 237.7 237.7 237.7 ZT20-23 208.8 208.8 208.8