condition mean min max ZT0-3 5849.55 5849.55 5849.55 ZT4-7 5100.6 5100.6 5100.6 ZT8-11 5922.65 5922.65 5922.65 ZT12-15 7101.95 7101.95 7101.95 ZT16-19 6768.25 6768.25 6768.25 ZT20-23 6771.200000000001 6771.200000000001 6771.200000000001