condition mean min max ZT0-3 109.554267 109.554267 109.554267 ZT4-7 122.2955465 122.2955465 122.2955465 ZT8-11 149.10643199999998 149.10643199999998 149.10643199999998 ZT12-15 182.201454 182.201454 182.201454 ZT16-19 162.54790350000002 162.54790350000002 162.54790350000002 ZT20-23 148.4161455 148.4161455 148.4161455