01043nas a2200109   4500008003900000245008900039210006900128260002200197520062000219100002200839856007200861       2006                          d00aSummary results of visual comfort measurements at the electrochromic windows testbed0 aSummary results of visual comfort measurements at the electrochr  aBerkeleyc03/20063 a<p>The study was performed at the Lawrence Berkeley National Laboratory (LBNL) windows testbed in Berkeley California. The location is 37.4°N latitude. The maximum solar altitude ranges from approximately 29° to 76°, with a yearly average of about 53°. The testbed rooms have their windows mounted due south. The azimuthal angle at sunrise varies from approximately 60° from due south in the winter to 120° in summer. The analysis was restricted to the period from 6:00-18:00 standard time. Sunrise ranges from 4:42 to 7:17 (solar time), so the sun was not visible during part of the winter study periods.</p>1 aClear, Robert, D.  uhttps://facades.lbl.gov/publications/summary-results-visual-comfort