condition mean min max ZT0-3 0.044139866666666666 0.0218226 0.06645575 ZT4-7 0.08410994999999999 0.08410994999999999 0.08410994999999999 ZT8-11 0.0876459 0.0876459 0.0876459 ZT12-15 0.22853274999999998 0.161109 0.29595649999999996 ZT16-19 0.29221600000000003 0.29221600000000003 0.29221600000000003 ZT20-23 0.0922295 0.0922295 0.0922295