Wee green dot

I tried to send this photo from my phone, which didn't work for some reason. So instead I took a photo of the photo. Which turned out terribly. But the important information is in it. See that wee green dot in the right hand corner? For the last 6 months that my dad has been in hospital that wee dot has been red, now it is green which means he is getting discharged from the hospital tomorrow.

Wee green dots are good.