condition mean min max ZT0-3 4.45229 4.45229 4.45229 ZT4-7 4.031515000000001 4.031515000000001 4.031515000000001 ZT8-11 4.169825 4.169825 4.169825 ZT12-15 5.73886 5.73886 5.73886 ZT16-19 4.46437 4.46437 4.46437 ZT20-23 4.84803 4.84803 4.84803