I think they look good, I use an app called Photone to set my lights, I have the lamp positioned so far away during my flowering phase that I get a lux value of about 55,000 or a PPFD of around 600 to 900 µmol/m²/s. But there are also growers who go higher. I know that the app isn't the same as a professional measuring device, but it's enough for me and helps me determine the height and how much percentage I set my lights to.