condition mean min max ZT0-3 0.0053388955 0.0 0.010677791 ZT4-7 0.015136050500000001 0.0 0.030272101000000003 ZT8-11 0.02329972475 0.011843419499999999 0.03475603 ZT12-15 1.8059531485 1.3514641595 2.2604421375 ZT16-19 2.6948805135000002 2.2590406525 3.1307203745 ZT20-23 1.7663671010000002 1.3755390205 2.1571951815