condition mean min max ZT0-3 0.90645925 0.45824850000000006 1.35467 ZT4-7 1.384001 1.384001 1.384001 ZT8-11 3.9812200000000004 3.9812200000000004 3.9812200000000004 ZT12-15 0 0 0 ZT16-19 2.253535 2.253535 2.253535 ZT20-23 0.602308 0.602308 0.602308