condition mean min max ZT0-3 5.601195000000001 5.601195000000001 5.601195000000001 ZT4-7 10.803355 10.803355 10.803355 ZT8-11 2.77489 2.77489 2.77489 ZT12-15 0.7764215 0.7764215 0.7764215 ZT16-19 0.3691855 0.3691855 0.3691855 ZT20-23 3.7053700000000003 3.7053700000000003 3.7053700000000003