condition mean min max ZT0-3 0.79903173975 0.7775638220000001 0.8204996575 ZT4-7 1.335432505 0.9900342905 1.6808307194999998 ZT8-11 2.92896282275 2.22377477 3.6341508755 ZT12-15 2.39034706325 2.057643988 2.7230501385 ZT16-19 1.26887451675 1.0947585655 1.442990468 ZT20-23 1.7489318235 1.6636413375 1.8342223094999999