condition mean min max ZT0-3 0.35745075 0.3545615 0.36034 ZT4-7 0.767474 0.767474 0.767474 ZT8-11 0.407049 0.407049 0.407049 ZT12-15 0 0 0 ZT16-19 0.48729200000000006 0.48729200000000006 0.48729200000000006 ZT20-23 0.6687855 0.6687855 0.6687855