condition mean min max ZT0-3 0.96994605975 0.5819828205 1.3579092990000001 ZT4-7 2.69938838125 1.4620566464999998 3.936720116 ZT8-11 5.77952695725 5.104174725 6.4548791895 ZT12-15 5.153556989249999 4.4160205674999995 5.891093411 ZT16-19 2.61818737125 2.5490713065 2.6873034359999997 ZT20-23 3.4379114345 3.0744547425 3.8013681265