Footnotes 1) https://www.cbs.nl/en-gb/longread/aanvullende-statistische-diensten/2025/statistical-combination-of-different-types-of-chlorofyll-a-measurements-in-the-dutch-north-sea 2) Visser, H., Estimation and detection of flexible trends (2004). Atmospheric Environment 38:4135–4145 Back to article