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. 2013 Aug;59:161–171. doi: 10.1016/j.enpol.2013.03.003

Fig. 4.

Fig. 4

Minimum farm-gate price for wheat straw and prevailing farm-gate market price over survey period. The boxes represent the 25% and 75% quartiles with the whiskers showing the full extent of the data. The dark grey line represents the mean of the data and the light grey line represents the published average farm-gate market price data from Defra.