condition mean min max ZT0-3 1331.100171 1331.100171 1331.100171 ZT4-7 784.164372 784.164372 784.164372 ZT8-11 892.5029975 892.5029975 892.5029975 ZT12-15 1291.0151685 1291.0151685 1291.0151685 ZT16-19 1254.756561 1254.756561 1254.756561 ZT20-23 1783.3958455000002 1783.3958455000002 1783.3958455000002