condition mean min max ZT0-3 2213.8 2213.8 2213.8 ZT4-7 2715.8 2715.8 2715.8 ZT8-11 2845.5 2845.5 2845.5 ZT12-15 3680.65 3680.65 3680.65 ZT16-19 3548.2 3548.2 3548.2 ZT20-23 3124.6 3124.6 3124.6