condition mean min max ZT0-3 45.69 45.69 45.69 ZT4-7 36.193799999999996 36.193799999999996 36.193799999999996 ZT8-11 72.35665 72.35665 72.35665 ZT12-15 59.79855 59.79855 59.79855 ZT16-19 49.7066 49.7066 49.7066 ZT20-23 61.470650000000006 61.470650000000006 61.470650000000006