condition mean min max ZT0-3 99.268975 84.0969 114.44104999999999 ZT4-7 42.3422 42.3422 42.3422 ZT8-11 19.9207 19.9207 19.9207 ZT12-15 0 0 0 ZT16-19 48.143 48.143 48.143 ZT20-23 64.59885 64.59885 64.59885