Mean weight and thorax length of the most important Copepoda species of samples taken between January and October 1971 and for 1 sample taken on 30th of May 1974 at station M55. The data were digitized by VLIZ from the original report: Van Gijsegem, B. (1979). Bijdrage tot de gewichtsbepaling van de belangrijkste soorten Copepoda in de zuidelijke bocht van de Noordzee. BSc Thesis. VUB: Brussel. 48 pp.