file: http://www.ipt.ntnu.no/~stanko/files/Courses/TPG4230/2020/Class_files/20200417/ESP_Peregrino_emulsion_and_visc_Visual_inspection.xls
video: http://www.ipt.ntnu.no/~stanko/files/Courses/TPG4230/2020/Videos/20200417_2.mp4