condition mean min max ZT0-3 130.70062 130.70062 130.70062 ZT4-7 406.0132975 406.0132975 406.0132975 ZT8-11 249.04467 249.04467 249.04467 ZT12-15 190.65602750000002 190.65602750000002 190.65602750000002 ZT16-19 59.3890935 59.3890935 59.3890935 ZT20-23 63.439307 63.439307 63.439307