Got Jonathan's official gastric emptying results back today. They are:
Liquid - 56% at 1 hour, 84% at 2 hours
Solid - 28% at 1 hour, 79% at 2 hours
These are well within the normal range. I looked up ranges on the internet, and according to one reputable site, the abnormal range would be anything less than 10% at 1 hour and anything less than 40% at 2 hours.