Sort of Right?

So the equations J.D. gave me to correct for the different equipment have almost worked.  On green pictures (V band), red pictures (R band), and infrared pictures (I band), they work perfectly.  But the blue pictures (B band) and the ultraviolet pictures (U band) they're completely off.  I need to know why, or any temperature measurements I take in the future could be unusable.  I'm going to have to spend a few hours going over it again and again until I figure it out.