condition mean min max ZT0-3 0.36351100000000003 0.36351100000000003 0.36351100000000003 ZT4-7 0.291815 0.291815 0.291815 ZT8-11 0.2116445 0.2116445 0.2116445 ZT12-15 0.7385085 0.7385085 0.7385085 ZT16-19 0.5085145 0.5085145 0.5085145 ZT20-23 0.8816755000000001 0.8816755000000001 0.8816755000000001