condition mean min max ZT0-3 0.4231005 0.4231005 0.4231005 ZT4-7 0.3435015 0.3435015 0.3435015 ZT8-11 0.19726059999999998 0.19726059999999998 0.19726059999999998 ZT12-15 0.0881654 0.0881654 0.0881654 ZT16-19 0.299071 0.299071 0.299071 ZT20-23 0.43041050000000003 0.43041050000000003 0.43041050000000003