condition mean min max ZT0-3 37.525875 30.36945 44.6823 ZT4-7 337.859 337.859 337.859 ZT8-11 333.6305 333.6305 333.6305 ZT12-15 0 0 0 ZT16-19 30.9688 30.9688 30.9688 ZT20-23 14.24795 14.24795 14.24795