condition mean min max ZT0-3 0.70022775 0.5653895 0.8350660000000001 ZT4-7 1.70501 1.70501 1.70501 ZT8-11 0.7063455000000001 0.7063455000000001 0.7063455000000001 ZT12-15 0 0 0 ZT16-19 1.388272 1.388272 1.388272 ZT20-23 1.6058 1.6058 1.6058