condition mean min max ZT0-3 0.0150870285 0.0 0.030174057 ZT4-7 0.03307764025 0.0 0.0661552805 ZT8-11 0.033467971 0.0 0.066935942 ZT12-15 0.1430062705 0.10258041400000001 0.183432127 ZT16-19 0.03900768075 0.0 0.0780153615 ZT20-23 0.031187996000000003 0.0 0.062375992000000005