condition mean min max ZT0-3 55.9622 51.686400000000006 60.238 ZT4-7 65.23935 65.23935 65.23935 ZT8-11 75.0548 75.0548 75.0548 ZT12-15 0 0 0 ZT16-19 84.94395 84.94395 84.94395 ZT20-23 61.002700000000004 61.002700000000004 61.002700000000004