condition mean min max ZT0-3 0.44070425 0.270222 0.6111865000000001 ZT4-7 0.46847133333333335 0.46847133333333335 0.46847133333333335 ZT8-11 1.65141 1.65141 1.65141 ZT12-15 2.6102612499999998 2.4356625 2.78486 ZT16-19 1.4783149999999998 1.11387 1.84276 ZT20-23 0 0 0