I've got a residential circuit with 3-way switching for one room's lights, 3-way switches for a second room's lights, some outlets, and a light-sensing switch for an outdoor light. All the 3-way lamps are showing voltages I can't sort out.

Here's what I get with a digital meter and a known earth:

Ground, White, Black

Light #1:
UP/UP= G 59v, W 120v, B (milivolts)
DOWN/UP= G 42v, W 120v, B 35v
UP/DOWN= G 42v, W 120v, B 37v
DOWN/DOWN= G 34v, W 120v, B (mil)

Light #2: Testing socket
UP/UP= B 120v, W (mil)
DOWN/UP= B 79v, W (mil)
UP/DOWN= B 79v, W (mil)
DOWN/DOWN= B 120v, W (mil)

I want to get this thing solved without disturbing the occupants much or cutting into the walls. Does this look familial to anyone?