condition mean min max ZT0-3 9.3044386165 7.3059133329999995 11.302963900000002 ZT4-7 32.916347515 23.703393415 42.129301615 ZT8-11 100.3437007375 75.838900525 124.84850094999999 ZT12-15 174.99481455 169.0859469 180.9036822 ZT16-19 144.5669707 132.9703082 156.1636332 ZT20-23 206.980752575 194.83534939999998 219.12615575