condition mean min max ZT0-3 83.158152 83.158152 83.158152 ZT4-7 61.241456 61.241456 61.241456 ZT8-11 67.94976299999999 67.94976299999999 67.94976299999999 ZT12-15 79.31346300000001 79.31346300000001 79.31346300000001 ZT16-19 101.58946 101.58946 101.58946 ZT20-23 96.11551349999999 96.11551349999999 96.11551349999999