/usr/include/freefoam/molecularMeasurements/ is in libfreefoam-dev 0.1.0+dfsg+1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/freefoam/molecularMeasurements/bufferedAccumulator.C
/usr/include/freefoam/molecularMeasurements/bufferedAccumulator.H
/usr/include/freefoam/molecularMeasurements/bufferedAccumulatorI.H
/usr/include/freefoam/molecularMeasurements/bufferedAccumulatorIO.C
/usr/include/freefoam/molecularMeasurements/correlationFunction.C
/usr/include/freefoam/molecularMeasurements/correlationFunction.H
/usr/include/freefoam/molecularMeasurements/correlationFunctionI.H
/usr/include/freefoam/molecularMeasurements/correlationFunctionIO.C
/usr/include/freefoam/molecularMeasurements/distribution.H
/usr/include/freefoam/molecularMeasurements/distributionI.H