condition mean min max ZT0-3 5.406242499999999 4.792245 6.020239999999999 ZT4-7 9.842385 9.842385 9.842385 ZT8-11 9.284225 9.284225 9.284225 ZT12-15 0 0 0 ZT16-19 4.09436 4.09436 4.09436 ZT20-23 7.844945 7.844945 7.844945