condition mean min max ZT0-3 380.001288 380.001288 380.001288 ZT4-7 682.8574105 682.8574105 682.8574105 ZT8-11 405.054401 405.054401 405.054401 ZT12-15 422.24712850000003 422.24712850000003 422.24712850000003 ZT16-19 275.001691 275.001691 275.001691 ZT20-23 246.4754165 246.4754165 246.4754165