Martin :

there were a total of 42 claims made by German night fighters this night of 30/31 January 1944.

Is there a certain time reported of the attacks ? this may help as it is most probably a Bf 110G-4 of III. or IV./NJG 1.

Oblt Augenstein shot down two Lancasters, the first at 21.49 and the second at 22.00.
's at 22.10 and 22.25
Oblt Schnaufer claimed 1 Lanc at 22.15 10 km West of Amsterdam
Lt Krupinski of IV./NJG 1 shot down a Lanc at 22.20 hours.

E