condition mean min max ZT0-3 4595.4 4595.4 4595.4 ZT4-7 3990.6 3990.6 3990.6 ZT8-11 4184.5 4184.5 4184.5 ZT12-15 3762.1 3762.1 3762.1 ZT16-19 4541.55 4541.55 4541.55 ZT20-23 4479.75 4479.75 4479.75