condition mean min max ZT0-3 29.16185 29.16185 29.16185 ZT4-7 42.322050000000004 42.322050000000004 42.322050000000004 ZT8-11 19.41665 19.41665 19.41665 ZT12-15 8.09662 8.09662 8.09662 ZT16-19 9.44276 9.44276 9.44276 ZT20-23 20.04975 20.04975 20.04975