condition mean min max ZT0-3 2216.45 2216.45 2216.45 ZT4-7 2690.9 2690.9 2690.9 ZT8-11 2300.15 2300.15 2300.15 ZT12-15 2480.3999999999996 2480.3999999999996 2480.3999999999996 ZT16-19 2637.45 2637.45 2637.45 ZT20-23 2385.7 2385.7 2385.7