condition mean min max ZT0-3 1.53106 1.53106 1.53106 ZT4-7 1.4003450000000002 1.4003450000000002 1.4003450000000002 ZT8-11 1.63388 1.63388 1.63388 ZT12-15 1.1378855 1.1378855 1.1378855 ZT16-19 2.195215 2.195215 2.195215 ZT20-23 1.743655 1.743655 1.743655