condition mean min max ZT0-3 0.10286764999999999 0.10286764999999999 0.10286764999999999 ZT4-7 0.034836000000000006 0.034836000000000006 0.034836000000000006 ZT8-11 0.0189737 0.0189737 0.0189737 ZT12-15 0.0918025 0.0918025 0.0918025 ZT16-19 0.2590595 0.2590595 0.2590595 ZT20-23 0.2334675 0.2334675 0.2334675