Scientific Data 2:150022 doi: 10.1038/sdata.2015.22 (2015); Published 23 June 2015; Updated 21 July 2015

The original version of this Data Descriptor contained a typographical error in the spelling of the author Xiaojing Wang which was incorrectly given as Xaojing Wang. This has now been corrected in the PDF and HTML versions of the Data Descriptor.