condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0192599295 0.0 0.038519859 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.008906312000000001 0.0 0.017812624000000003 ZT20-23 0.032905522 0.0 0.065811044