condition mean min max ZT0-3 202.357169575 188.3020456 216.41229355000002 ZT4-7 75.3583406025 62.17070459999999 88.545976605 ZT8-11 53.726446817500005 47.93619586 59.516697775000004 ZT12-15 67.921767195 57.367692840000004 78.47584155 ZT16-19 112.28146401 102.37087817 122.19204984999999 ZT20-23 117.4217781775 109.128649155 125.7149072