condition mean min max ZT0-3 59.858518520000004 56.52412924 63.1929078 ZT4-7 72.635701995 62.724055945 82.547348045 ZT8-11 115.539140995 99.83989414 131.23838784999998 ZT12-15 102.74592859250001 92.906066985 112.5857902 ZT16-19 107.95988007500002 107.16093230000001 108.75882785000002 ZT20-23 89.30161143 86.15355794499999 92.449664915