condition mean min max ZT0-3 146.296 120.85050000000001 171.7415 ZT4-7 98.96525 98.96525 98.96525 ZT8-11 73.8031 73.8031 73.8031 ZT12-15 0 0 0 ZT16-19 120.96950000000001 120.96950000000001 120.96950000000001 ZT20-23 115.48570000000001 115.48570000000001 115.48570000000001