condition mean min max ZT0-3 38.208719 38.208719 38.208719 ZT4-7 115.4909365 115.4909365 115.4909365 ZT8-11 97.84379200000001 97.84379200000001 97.84379200000001 ZT12-15 95.478821 95.478821 95.478821 ZT16-19 58.511146 58.511146 58.511146 ZT20-23 42.0152645 42.0152645 42.0152645