condition mean min max ZT0-3 1329.85 1329.85 1329.85 ZT4-7 1059.2 1059.2 1059.2 ZT8-11 815.3 815.3 815.3 ZT12-15 682.2 682.2 682.2 ZT16-19 1131.6 1131.6 1131.6 ZT20-23 1520.3000000000002 1520.3000000000002 1520.3000000000002