condition mean min max ZT0-3 306.711465 306.711465 306.711465 ZT4-7 1358.406873 1358.406873 1358.406873 ZT8-11 2811.6154815 2811.6154815 2811.6154815 ZT12-15 2512.332342 2512.332342 2512.332342 ZT16-19 1537.252042 1537.252042 1537.252042 ZT20-23 731.4243644999999 731.4243644999999 731.4243644999999