condition mean min max ZT0-3 121.634118 121.634118 121.634118 ZT4-7 91.81203400000001 91.81203400000001 91.81203400000001 ZT8-11 101.9524005 101.9524005 101.9524005 ZT12-15 120.216089 120.216089 120.216089 ZT16-19 85.8480375 85.8480375 85.8480375 ZT20-23 87.698785 87.698785 87.698785