condition mean min max ZT0-3 0.054626157499999994 0.0 0.10925231499999999 ZT4-7 0.010104264 0.0 0.020208528 ZT8-11 1.95896220025 0.548366504 3.3695578965 ZT12-15 7.0059212835 6.3815010445 7.6303415225 ZT16-19 3.14377655225 2.5263481194999997 3.761204985 ZT20-23 2.1752693914999996 1.708278532 2.6422602509999997