condition mean min max ZT0-3 96.424375 80.54575 112.303 ZT4-7 50.2429 50.2429 50.2429 ZT8-11 579.1425 579.1425 579.1425 ZT12-15 0 0 0 ZT16-19 287.21500000000003 287.21500000000003 287.21500000000003 ZT20-23 58.811499999999995 58.811499999999995 58.811499999999995