condition mean min max ZT0-3 512.451064 512.451064 512.451064 ZT4-7 391.332797 391.332797 391.332797 ZT8-11 313.5355 313.5355 313.5355 ZT12-15 422.0106685 422.0106685 422.0106685 ZT16-19 457.16132600000003 457.16132600000003 457.16132600000003 ZT20-23 751.991769 751.991769 751.991769