The data.frame stores transcription values obtained from the Cufflinks software for two samples (CEBPA_WT and CEBPA_KO). Transcription values are given in fragments per kilobase of transcripts per million fragments (FPKM).
The GRangesList contains two elements: "CEBPA_WT_1" and "CEBPA_KO_1". Both list elements are GRanges objects storing mapped reads from anti-H3K4me3 ChIP-seq experiments. The first sample was a wild-type mouse cell line. The second sample was obtained from the same cell line after CEPBA knock-out.