condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.060697499999999995 0.060697499999999995 0.060697499999999995 ZT12-15 0.015258516666666666 0.0 0.030517033333333332 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0