condition mean min max ZT0-3 66.395806 66.395806 66.395806 ZT4-7 118.480561 118.480561 118.480561 ZT8-11 124.69117700000001 124.69117700000001 124.69117700000001 ZT12-15 116.2188385 116.2188385 116.2188385 ZT16-19 75.437693 75.437693 75.437693 ZT20-23 52.002643000000006 52.002643000000006 52.002643000000006