condition mean min max ZT0-3 46.620625000000004 43.4213 49.81995 ZT4-7 40.43315 40.43315 40.43315 ZT8-11 38.3322 38.3322 38.3322 ZT12-15 0 0 0 ZT16-19 42.2635 42.2635 42.2635 ZT20-23 47.874 47.874 47.874