condition mean min max ZT0-3 1200.155134 1200.155134 1200.155134 ZT4-7 1423.0199145000001 1423.0199145000001 1423.0199145000001 ZT8-11 1785.8005435 1785.8005435 1785.8005435 ZT12-15 1808.6369845 1808.6369845 1808.6369845 ZT16-19 1497.052211 1497.052211 1497.052211 ZT20-23 1317.2518850000001 1317.2518850000001 1317.2518850000001