condition mean min max ZT0-3 5.0984 5.07411 5.12269 ZT4-7 3.9107649999999996 3.9107649999999996 3.9107649999999996 ZT8-11 3.375695 3.375695 3.375695 ZT12-15 0 0 0 ZT16-19 5.78928 5.78928 5.78928 ZT20-23 5.78332 5.78332 5.78332