condition mean min max ZT0-3 40.29795 39.3329 41.263 ZT4-7 29.6928 29.6928 29.6928 ZT8-11 27.18215 27.18215 27.18215 ZT12-15 0 0 0 ZT16-19 36.9854 36.9854 36.9854 ZT20-23 34.511449999999996 34.511449999999996 34.511449999999996