condition mean min max ZT0-3 90.86637068499999 81.43167657 100.3010648 ZT4-7 157.05186915000002 116.67719439999999 197.4265439 ZT8-11 325.67401605 273.75580414999996 377.59222795000005 ZT12-15 388.64205875000005 371.84355400000004 405.4405635 ZT16-19 298.88144255 267.87404625 329.88883885 ZT20-23 235.42026155 223.02050724999998 247.82001585