condition mean min max ZT0-3 11367.7 11367.7 11367.7 ZT4-7 14971.4 14971.4 14971.4 ZT8-11 14840.849999999999 14840.849999999999 14840.849999999999 ZT12-15 14753.05 14753.05 14753.05 ZT16-19 10816.45 10816.45 10816.45 ZT20-23 9883.75 9883.75 9883.75