condition mean min max ZT0-3 188.436 123.998 240.7265 ZT4-7 123.5625 123.5625 123.5625 ZT8-11 113.3475 113.3475 113.3475 ZT12-15 155.36675000000002 147.97050000000002 162.763 ZT16-19 168.997 168.997 168.997 ZT20-23 219.7115 219.7115 219.7115