condition mean min max ZT0-3 67.1216 67.1216 67.1216 ZT4-7 43.563 43.563 43.563 ZT8-11 30.29525 30.29525 30.29525 ZT12-15 35.1265 35.1265 35.1265 ZT16-19 49.71635 49.71635 49.71635 ZT20-23 64.19315 64.19315 64.19315