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You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: Variations of color parameters or their ratios reflect complex forming processes in the interplay of dust sedimentation, pedogenesis and reworking and their interpretation is not always straightforward. Sprafke (2016) uses color **data** to enhance field descriptions objectively, with stratigraphic units classified with master horizons (A, B, C and combinations) and their subordinate characteristics (FAO, 2006). Pedological subdivisions of LPS (Bronger, 1976(Bronger, , 2008Schirmer, 2000Schirmer, , 2016 are reasonable, as visible changes in the stratigraphy of loess profiles are mainly related to post-depositional alteration of the deposits. Numerical color values support the precise separation of stratigraphic units and the classification of the units in relation to each other based on changes in certain color components (Sprafke, 2016). Color-based stratigraphy supports thorough field documentation but remains entirely descriptive and does not discriminate between in situ and reworked material.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

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