condition mean min max ZT0-3 485.5 485.5 485.5 ZT4-7 455.8 455.8 455.8 ZT8-11 455.45000000000005 455.45000000000005 455.45000000000005 ZT12-15 462.1 462.1 462.1 ZT16-19 453.75 453.75 453.75 ZT20-23 513.1 513.1 513.1