condition mean min max ZT0-3 0.17426267225 0.049794727000000004 0.2987306175 ZT4-7 0.53883353275 0.450603833 0.6270632325000001 ZT8-11 0.3247459855 0.282074337 0.36741763400000005 ZT12-15 1.6706539067500001 1.133587185 2.2077206285 ZT16-19 2.7677699475 2.2611837435 3.2743561515 ZT20-23 4.40932728025 4.160806050500001 4.65784851