condition mean min max ZT0-3 0.137002 0.0 0.2785745 ZT4-7 0.0 0.0 0.0 ZT8-11 0.127639 0.127639 0.127639 ZT12-15 0.28654674999999996 0.1455955 0.427498 ZT16-19 0.0 0.0 0.0 ZT20-23 0.41105 0.41105 0.41105