condition mean min max ZT0-3 42.372775000000004 39.26855 45.477000000000004 ZT4-7 25.807249999999996 25.807249999999996 25.807249999999996 ZT8-11 91.1075 91.1075 91.1075 ZT12-15 0 0 0 ZT16-19 76.57325 76.57325 76.57325 ZT20-23 48.30785 48.30785 48.30785