 Hi, I'm Matthew Tantieri, I'm a Day Lighting Consultant and Lighting Consultant. I have my own practice called Tantieri and Associates. I'm also an assistant professor at Parsons School of Design and I teach Day Lighting, Electric Lighting, Sustainable Design and Systems Technology. So I want to thank the Collections Care Network for inviting me to say a few words about Day Lighting. What I'd like to say in my two minutes is to just bring up a constellation of Day Lighting issues as an overview. I can put them forward by answering the question, what do I want from a conservator? And what I would want from a conservator if I'm working on a Day Lighting project is I would like to know what my parameters are for Day Lighting and I could break that down into three specific things. I would like to know what's the duration of time I can have Day Lighting on and artwork, what wavelengths and at what intensity. And by having those three criterions I can assess the success or failure of a design and I can analyze a design so having clearly defined parameters helps me. The other thing is in terms in regards to the Collections Care Network I think one of the great resources it can be is providing a database for Day Lighting solutions and Day Lighting knowledge. So a few examples of that would be someone who is interested in Day Lighting their collection could come to the Collections Care Network and they could look up regional solutions as to how museums in their area that share similar climate conditions approach Day Lighting. Within that local area what different solutions worked and there could be a whole range of solutions. So I'll just extend that to that when I come into a project I'd like to know that the conservator has a common knowledge a widespread broad knowledge of Day Lighting so that we could work from the same knowledge base and that's what I think a good purpose of the Collections Care Network could be a good mission for it.