condition mean min max ZT0-3 1.0144065 1.0144065 1.0144065 ZT4-7 0.192608 0.192608 0.192608 ZT8-11 0.2455155 0.2455155 0.2455155 ZT12-15 0.13956375 0.13956375 0.13956375 ZT16-19 0.319658 0.319658 0.319658 ZT20-23 1.1087310000000001 1.1087310000000001 1.1087310000000001