condition mean min max ZT0-3 339.631 324.43399999999997 354.828 ZT4-7 551.1030000000001 551.1030000000001 551.1030000000001 ZT8-11 622.2635 622.2635 622.2635 ZT12-15 0 0 0 ZT16-19 411.7125 411.7125 411.7125 ZT20-23 398.819 398.819 398.819