condition mean min max ZT0-3 373.010451 373.010451 373.010451 ZT4-7 385.1540265 385.1540265 385.1540265 ZT8-11 565.4472835 565.4472835 565.4472835 ZT12-15 473.5687275 473.5687275 473.5687275 ZT16-19 659.735129 659.735129 659.735129 ZT20-23 381.3464605 381.3464605 381.3464605