Yes, in principle, absolutely. It wouldn't be practical though. The detectors are large, and sensitive to every kind of noise and interference, and you need to collect data, not just take a mere single reading. But, funny story, during commissioning the Chinese officials in charge of the nuclear plant were very conservative about what information they wanted to share with the experiment regarding the plant's operational status, I got to see them with some funny looks on their faces when the physicists told them, and showed them plots of exactly what was going on in the reactors and when.