condition mean min max ZT0-3 0.081124 0.0 0.243372 ZT4-7 0.1234225 0.1234225 0.1234225 ZT8-11 0.5003575 0.5003575 0.5003575 ZT12-15 0.9016394999999999 0.793971 1.0093079999999999 ZT16-19 0.3546615 0.3546615 0.3546615 ZT20-23 0.40013849999999995 0.40013849999999995 0.40013849999999995