condition mean min max ZT0-3 62.53776666666667 59.843050000000005 65.373 ZT4-7 64.7658 64.7658 64.7658 ZT8-11 68.5968 68.5968 68.5968 ZT12-15 90.648325 86.40345 94.89320000000001 ZT16-19 85.77950000000001 85.77950000000001 85.77950000000001 ZT20-23 66.862 66.862 66.862