condition mean min max ZT0-3 49.4893 49.4893 49.4893 ZT4-7 52.748850000000004 52.748850000000004 52.748850000000004 ZT8-11 82.81545 82.81545 82.81545 ZT12-15 82.03450000000001 82.03450000000001 82.03450000000001 ZT16-19 56.88415 56.88415 56.88415 ZT20-23 52.329350000000005 52.329350000000005 52.329350000000005