Martha--If you have the earlier test numbers form the 1 unit etc prior to the ER...I think it would be a good idea to add them to the top of the SS. It would give additional data to the group.
An early hunch from me is, that maybe 2 units isn't enough, but 3 is too much--some cats are very sensitive to small changes. At least the curve went in the right direction last night. Interested to see what today brings.