condition mean min max ZT0-3 326.67975 323.704 329.6555 ZT4-7 210.425 210.425 210.425 ZT8-11 60.29075 60.29075 60.29075 ZT12-15 0 0 0 ZT16-19 121.744 121.744 121.744 ZT20-23 285.5435 285.5435 285.5435