condition mean min max ZT0-3 2948.8500000000004 2948.8500000000004 2948.8500000000004 ZT4-7 3373.9 3373.9 3373.9 ZT8-11 2507.2 2507.2 2507.2 ZT12-15 1352.8 1352.8 1352.8 ZT16-19 1430.6 1430.6 1430.6 ZT20-23 2091.8 2091.8 2091.8