condition mean min max ZT0-3 2214.4 2214.4 2214.4 ZT4-7 2638.8 2638.8 2638.8 ZT8-11 2579.5 2579.5 2579.5 ZT12-15 2527.65 2527.65 2527.65 ZT16-19 2378.95 2378.95 2378.95 ZT20-23 2011.85 2011.85 2011.85