condition mean min max ZT0-3 0.0281473 0.01365475 0.0409209 ZT4-7 0.09317315000000001 0.09317315000000001 0.09317315000000001 ZT8-11 0.0274207 0.0274207 0.0274207 ZT12-15 0.1504005 0.142909 0.157892 ZT16-19 0.17054350000000001 0.17054350000000001 0.17054350000000001 ZT20-23 0.11755199999999999 0.11755199999999999 0.11755199999999999