condition mean min max ZT0-3 920.6 920.6 920.6 ZT4-7 707.4 707.4 707.4 ZT8-11 928.75 928.75 928.75 ZT12-15 895.5 895.5 895.5 ZT16-19 1096.65 1096.65 1096.65 ZT20-23 1313.1 1313.1 1313.1