condition mean min max ZT0-3 123.9159872825 56.371434165 191.4605404 ZT4-7 27.972625139999998 22.726993954999998 33.218256325 ZT8-11 45.27051685 38.372194275 52.168839425 ZT12-15 54.066614815 54.00985822 54.123371410000004 ZT16-19 53.80779062 48.231418919999996 59.38416232 ZT20-23 68.07502008 62.29291861 73.85712155