condition mean min max ZT0-3 720.5 720.5 720.5 ZT4-7 492.9 492.9 492.9 ZT8-11 495.8 495.8 495.8 ZT12-15 507.9 507.9 507.9 ZT16-19 530.8499999999999 530.8499999999999 530.8499999999999 ZT20-23 665.8 665.8 665.8