condition mean min max ZT0-3 357.21746 357.21746 357.21746 ZT4-7 278.5761695 278.5761695 278.5761695 ZT8-11 483.99324 483.99324 483.99324 ZT12-15 390.557454 390.557454 390.557454 ZT16-19 773.4449375 773.4449375 773.4449375 ZT20-23 901.711852 901.711852 901.711852