condition mean min max ZT0-3 0.017587652250000002 0.0 0.035175304500000004 ZT4-7 0.06209356966666666 0.0 0.12418713933333332 ZT8-11 0.09764601033333332 0.0 0.19529202066666665 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0