condition mean min max ZT0-3 2093.55 2093.55 2093.55 ZT4-7 2545.2 2545.2 2545.2 ZT8-11 2475.15 2475.15 2475.15 ZT12-15 2552.1499999999996 2552.1499999999996 2552.1499999999996 ZT16-19 2378.95 2378.95 2378.95 ZT20-23 2110.7 2110.7 2110.7