condition mean min max ZT0-3 0.8423091399999999 0.37631297399999997 1.3083053059999998 ZT4-7 0.8100844795 0.2310561975 1.3891127614999998 ZT8-11 9.531608366 7.0808740315000005 11.9823427005 ZT12-15 10.27291866175 9.368787254499999 11.177050069 ZT16-19 7.24442316975 7.207047204 7.2817991355 ZT20-23 7.830820350750001 6.6284236199999995 9.033217081500002