condition mean min max ZT0-3 0.5211193595 0.11329334199999999 0.928945377 ZT4-7 2.3793013504999996 1.766510883 2.9920918179999996 ZT8-11 2.3027285805 2.1524501955 2.4530069655 ZT12-15 4.39768635225 3.5484401009999997 5.2469326034999995 ZT16-19 4.142609432 3.91148293 4.373735934 ZT20-23 5.27009658425 5.1989198640000005 5.3412733045