cold frame (before/after)

So we have this cold frame Grandma bought Michael for his birthday one year... we use it for winter growing. There are two pieces of plastic to cover the top. End of April, we forgot to open the covers in a very hot day and some things got almost cooked in there, ops! Here is the picture to prove the unhappy plants from April 22nd.

And look how they are right now below, 2 weeks later, we don't cover the top anymore as it doesn't go freezing during the nights. The picture is from May 6th. Arugula already seeded with flowers. They all seem to be doing fine, many kinds of lettuce, some radish, green onions, mint, etc.