Connie, those top three or four flowers would represent the effects of the later part of the chill when you were far above normal. If the chill was to warm the bulbs reprograming becomes corrupted and that most often shows up in flower quality. In your case, that would be the last few buds to open. Some cultivars within any Division may be affected more than others.
EDIT ADDEDD: Conversely, those that had far below normal temperatures during the same later part of the winter chill cycle may or will see the same affects. It is this later part of the chill cycle that's so important to good bud and flower quality.
