condition mean min max ZT0-3 802.4000000000001 802.4000000000001 802.4000000000001 ZT4-7 386.9 386.9 386.9 ZT8-11 565.2 565.2 565.2 ZT12-15 632.45 632.45 632.45 ZT16-19 743.15 743.15 743.15 ZT20-23 898.6500000000001 898.6500000000001 898.6500000000001