Sometimes people don't enter quality. It's stupid to require this value and use it to compute stuff when it is meaningless. These might be considered requirements of this feature: * allow users to specify a don't care value on the data entry tab * allow users to specify the default quality should be the ignore value * handle don't care in graphs and statistics * handle don't care in CSV files On Sun, Apr 15, 2012 at 7:07 PM, Melissa S. C. <...> wrote: Does recording sleep periods with a quality of zero mean they will be counted as having had sleep? I'm an avid user of your program, but I don't remember having this issue come up before. I want to also keep a record of long, terrible, failed attempts to sleep that are unfortunately happening, but I fear that it will wrongly skew the numbers. Thanks for your help and for the wonderful app!