Genomic region with a circadian effect. Fitted circadian effect for the genomic region of gene AT2G46830 on the forward strand of chromosome 2. On the Y -axis the amplitude of the circadian rhythm is given. The grey rectangles indicate the detected regions showing a significant circadian effect. The different replicates are indicated by ∘ and , while the different samples in the 12 h light / 12 h dark cycles regime are represented by different colorsl.