condition mean min max ZT0-3 10.984200000000001 10.984200000000001 10.984200000000001 ZT4-7 10.301034999999999 10.301034999999999 10.301034999999999 ZT8-11 11.793849999999999 11.793849999999999 11.793849999999999 ZT12-15 11.913599999999999 11.913599999999999 11.913599999999999 ZT16-19 13.6028 13.6028 13.6028 ZT20-23 10.94975 10.94975 10.94975