condition mean min max ZT0-3 10.0880375 9.942095 10.23398 ZT4-7 9.05912 9.05912 9.05912 ZT8-11 10.5536 10.5536 10.5536 ZT12-15 0 0 0 ZT16-19 11.125425 11.125425 11.125425 ZT20-23 11.44865 11.44865 11.44865