condition mean min max ZT0-3 9.689820000000001 8.943200000000001 10.436440000000001 ZT4-7 8.81352 8.81352 8.81352 ZT8-11 10.836200000000002 10.836200000000002 10.836200000000002 ZT12-15 0 0 0 ZT16-19 12.8432 12.8432 12.8432 ZT20-23 10.929549999999999 10.929549999999999 10.929549999999999