condition mean min max ZT0-3 5.8794284140913335 4.376005242274 7.109125000000001 ZT4-7 11.2899 11.2899 11.2899 ZT8-11 44.30955 44.30955 44.30955 ZT12-15 46.3583 42.025 50.6916 ZT16-19 23.131700000000002 23.131700000000002 23.131700000000002 ZT20-23 16.70911 16.70911 16.70911