condition mean min max ZT0-3 43.062775 34.9758 51.14975 ZT4-7 109.99549999999999 109.99549999999999 109.99549999999999 ZT8-11 57.61565 57.61565 57.61565 ZT12-15 0 0 0 ZT16-19 23.138399999999997 23.138399999999997 23.138399999999997 ZT20-23 56.24435 56.24435 56.24435