condition mean min max ZT0-3 5.63413 5.63413 5.63413 ZT4-7 4.16217 4.16217 4.16217 ZT8-11 4.647130000000001 4.647130000000001 4.647130000000001 ZT12-15 6.88562 6.88562 6.88562 ZT16-19 8.245835 8.245835 8.245835 ZT20-23 6.627095000000001 6.627095000000001 6.627095000000001