condition mean min max ZT0-3 2504.826299 2504.826299 2504.826299 ZT4-7 2552.5345065 2552.5345065 2552.5345065 ZT8-11 4736.543285 4736.543285 4736.543285 ZT12-15 4495.507485 4495.507485 4495.507485 ZT16-19 4829.880195 4829.880195 4829.880195 ZT20-23 3485.3849665 3485.3849665 3485.3849665