So it's pretty, it's pretty er er and in fact some of these, these flocks who were grazing at the er w where just above that er that limit  only just but just slightly above it  so, so  but in fact i if the farmers er grazed their sheep er further down the hillside  er then in fact the, the er er the level dropped very rapidly and the sheep were then   erm so it was a, a commercial decision as to whether to keep your sheep up on the hills to, to eat radioactive grass and get the compensation  or to graze your sheep further down and actually the, the lamb  the, the, the lambs for, for, for  for the market.