condition mean min max ZT0-3 0.180651 0.180651 0.180651 ZT4-7 0.44576499999999997 0.44576499999999997 0.44576499999999997 ZT8-11 0.0 0.0 0.0 ZT12-15 0.097766 0.097766 0.097766 ZT16-19 0.6479425 0.6479425 0.6479425 ZT20-23 0.16084900000000002 0.16084900000000002 0.16084900000000002