condition mean min max ZT0-3 3594.3500000000004 3594.3500000000004 3594.3500000000004 ZT4-7 7498.1 7498.1 7498.1 ZT8-11 6703.75 6703.75 6703.75 ZT12-15 5148.75 5148.75 5148.75 ZT16-19 3338.4 3338.4 3338.4 ZT20-23 3224.8500000000004 3224.8500000000004 3224.8500000000004