condition mean min max ZT0-3 88.48705 88.48705 88.48705 ZT4-7 101.30215000000001 101.30215000000001 101.30215000000001 ZT8-11 89.26085 89.26085 89.26085 ZT12-15 68.86275 68.86275 68.86275 ZT16-19 79.23545 79.23545 79.23545 ZT20-23 77.50115 77.50115 77.50115