condition mean min max ZT0-3 0.6134415 0.6134415 0.6134415 ZT4-7 1.5045700000000002 1.5045700000000002 1.5045700000000002 ZT8-11 5.827885 5.827885 5.827885 ZT12-15 2.9263399999999997 2.9263399999999997 2.9263399999999997 ZT16-19 2.4440150000000003 2.4440150000000003 2.4440150000000003 ZT20-23 0.36925399999999997 0.36925399999999997 0.36925399999999997