condition mean min max ZT0-3 35.501900000000006 33.4767 37.527100000000004 ZT4-7 58.84085 58.84085 58.84085 ZT8-11 53.591300000000004 53.591300000000004 53.591300000000004 ZT12-15 0 0 0 ZT16-19 26.9277 26.9277 26.9277 ZT20-23 43.24145 43.24145 43.24145