condition mean min max ZT0-3 79.232847 79.232847 79.232847 ZT4-7 69.09322350000001 69.09322350000001 69.09322350000001 ZT8-11 65.55275900000001 65.55275900000001 65.55275900000001 ZT12-15 72.11709450000001 72.11709450000001 72.11709450000001 ZT16-19 93.63361850000001 93.63361850000001 93.63361850000001 ZT20-23 114.78459000000001 114.78459000000001 114.78459000000001