condition mean min max ZT0-3 0.85808775 0.46010100000000004 1.2560745 ZT4-7 0.356128 0.356128 0.356128 ZT8-11 1.638625 1.638625 1.638625 ZT12-15 0 0 0 ZT16-19 8.453765 8.453765 8.453765 ZT20-23 1.984275 1.984275 1.984275