condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.021005968250000003 0.0 0.042011936500000006 ZT8-11 5.32960159425 1.7084602315000001 8.950742957 ZT12-15 36.8883482375 28.866251435000002 44.91044504 ZT16-19 25.33345318 21.654547205 29.012359155 ZT20-23 17.924888092499998 17.753293605 18.09648258