This is a evap line right?

So I tested this morning and most likely the test was playing tricks on me...I swear I could see a faint line but I couldnt see it unless moving it so I figured it was negative and I forgot to throw it out. So tonight am about to throw it away and I see a skinny line I'm assuming that's just evap line I mean theres a reason why they tell us to only look at it for the first 10 minutes....top pic morning. bottom pic same test but at night.

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