condition mean min max ZT0-3 26.573063644250002 0.9745539520000001 52.1715733365 ZT4-7 254.3894248325 182.985930665 325.792919 ZT8-11 288.2204139775 240.640055055 335.80077289999997 ZT12-15 30.80909717975 1.325346071 60.292848288500004 ZT16-19 0.27083384975 0.23723277250000002 0.30443492699999997 ZT20-23 0.07971974849999999 0.0 0.15943949699999999