condition mean min max ZT0-3 0.77141775 0.34352099999999997 1.1993145 ZT4-7 1.31847 1.31847 1.31847 ZT8-11 1.1015555 1.1015555 1.1015555 ZT12-15 0 0 0 ZT16-19 0.981935 0.981935 0.981935 ZT20-23 0.8341525000000001 0.8341525000000001 0.8341525000000001