condition mean min max ZT0-3 2806.120365 2806.120365 2806.120365 ZT4-7 2856.02953 2856.02953 2856.02953 ZT8-11 1787.7307250000001 1787.7307250000001 1787.7307250000001 ZT12-15 1482.8184695 1482.8184695 1482.8184695 ZT16-19 1312.005517 1312.005517 1312.005517 ZT20-23 1307.678163 1307.678163 1307.678163