/usr/share/KWVolView/Presets/WindowLevels/ is in volview 3.4-3ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/KWVolView/Presets/WindowLevels/CT-Abdomen-Soft-Tissue.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Bone-1500-300.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Bone-2000-300.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Bone.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Brain.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Emphysema.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Hila-Pleura.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Ischemia-HardNC.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Ischemia-SoftNC.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Liver.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Lung-Hard.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Lung-Soft.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Lung.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Mediastinum.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-SoftTissue-300-30.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-SoftTissue-400-40.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Vasculature-Hard.vvt
/usr/share/KWVolView/Presets/WindowLevels/CT-Vasculature-Soft.vvt