condition mean min max ZT0-3 1.0984965 1.0984965 1.0984965 ZT4-7 2.71192 2.71192 2.71192 ZT8-11 1.610705 1.610705 1.610705 ZT12-15 0.5644199999999999 0.5644199999999999 0.5644199999999999 ZT16-19 1.127685 1.127685 1.127685 ZT20-23 1.137892 1.137892 1.137892