condition mean min max ZT0-3 0.912683718 0.628330838 1.197036598 ZT4-7 0.0 0.0 0.0 ZT8-11 4.00847017825 0.8210293104999999 7.195911046 ZT12-15 40.24919432 25.611313765000002 54.887074874999996 ZT16-19 55.997391002499995 55.057365075 56.93741693 ZT20-23 43.426015944999996 40.455792669999994 46.39623922