Added a plot and some quantitative details: 	modified:   MissingObsHistIds.ipynb
Added a plot and some quantitative details:
	modified:   MissingObsHistIds.ipynb

DarkEnergyScienceCollaboration/Twinkles,LSSTDESC/Twinkles,LSSTDESC/Twinkles,DarkEnergyScienceCollaboration/Twinkles