for the 3 tomo boards that I've tested against the formula ( el tomo, OB1 and hydroshort ) the "magic number" of 110.26 works a bit better than 106.5 ..... anyway, it tends to be a pretty good quick estimator - long discussion of this elsewhere (instagram probably)
a wildly incorrect formula would be ( L * W * H ) * time_of_day = your volume.
a wildly incorrect formula would be ( L * W * H ) * time_of_day = your volume.