condition mean min max ZT0-3 59.204499999999996 59.204499999999996 59.204499999999996 ZT4-7 47.1481 47.1481 47.1481 ZT8-11 45.46265 45.46265 45.46265 ZT12-15 47.74675 47.74675 47.74675 ZT16-19 90.32405 90.32405 90.32405 ZT20-23 68.1746 68.1746 68.1746