condition mean min max ZT0-3 0.5960175 0.4865435 0.7054914999999999 ZT4-7 0.7955915 0.7955915 0.7955915 ZT8-11 5.032114999999999 5.032114999999999 5.032114999999999 ZT12-15 0 0 0 ZT16-19 3.5981 3.5981 3.5981 ZT20-23 1.4654965 1.4654965 1.4654965