condition mean min max ZT0-3 97.36446645250001 91.124159205 103.60477370000001 ZT4-7 87.01454989749999 81.41188611 92.617213685 ZT8-11 45.432174492499996 31.800228675 59.06412031 ZT12-15 8.343807319749999 6.7079488575 9.979665782 ZT16-19 13.299412935 12.049245095 14.549580774999999 ZT20-23 24.4538849875 17.431820265000002 31.47594971