condition mean min max ZT0-3 0.1127065135 0.060909622000000004 0.164503405 ZT4-7 0.68105298975 0.66614457 0.6959614095 ZT8-11 1.8176874349999999 0.8022509584999999 2.8331239115 ZT12-15 4.5830752455 4.038805023 5.127345468 ZT16-19 3.5518728285 3.5418050990000003 3.561940558 ZT20-23 4.0955001555 3.7535185405000004 4.4374817705