Investigate behaviour of theilsen method

Theil-sen bias adjustment investigation issue

See issue description below

Responsibilities/action points:

• Choose dataset and make small cut-out of subset with issue. @a002527 @joakim.low
• Check code for bugs or issues. @a001742 @a002527
• Investigate time series data. @a001742
• Output and investigate bias adjustment parameters. @a001920

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In some biasadjusted results with the theilsen method some grid-cells are adjusted to lower values. This needs to be further investigated. (theilsen r01t05 to the left, theilsen r00t05 in the middle and then the original data to the right)