What is the average difference in the Men's Tee box and the Women's Teebox in golf?

Red tee yardages for a par 72 18 hole Golf course can vary greatly. Typically they fall between 5000 to 6000 yards. Men's white tees average near 6200, Men's blue tees average near 6600 and "Tiger" tees are in the 7000+ range. The average difference per hole between a 5500 yard course and a 6200 yard course is just under 40 yards per hole.