Because you never know when you'll need them! From magnetic-declination.com.
Location Latitude Longitude Declination
BERKELEY 37° 52' 18" N 122° 16' 18" W 14° 7' EAST
PIEDMONT 37° 49' 28" N 122° 13' 50" W 14° 6' EAST
CONCORD 37° 58' 41" N 122° 1' 48" W 14° 6' EAST
Location Latitude Longitude Declination
BERKELEY 37° 52' 18" N 122° 16' 18" W 14° 7' EAST
PIEDMONT 37° 49' 28" N 122° 13' 50" W 14° 6' EAST
CONCORD 37° 58' 41" N 122° 1' 48" W 14° 6' EAST