condition mean min max ZT0-3 76.27066786 74.18791963 78.35341609 ZT4-7 58.510383875 52.146089955 64.874677795 ZT8-11 93.9003140525 75.162036175 112.63859193 ZT12-15 79.486070175 63.656021984999995 95.316118365 ZT16-19 54.30295556 48.127932630000004 60.47797849 ZT20-23 34.6796654325 27.14479341 42.214537455