These radio data are summarised in Table \[tab:radio-data\]. Lower-frequency counterparts were found for 266 out of the 296 sources in the sample, allowing radio spectral indices to be calculated for these 266 sources and upper limits to be placed on the spectral indices of the remaining 30 sources.

![Positions of all 296 sources in the 10C Lockman Hole sample. The positions of the 96 sources in the sample used in this paper are shown as small circles (red in the online version), and the remaining 200 sources which are not in this sample are shown as crosses (blue in the online version). The sources which fall below the 10C completeness limit, and are therefore not included in the sample used in this paper, as shown as pale blue crosses. The 10C complete areas are shown by the rectangles (the large rectangles indicate the regions complete to 1 mJy and small rectangles contained within these show the regions complete to 0.5 mJy). The WSRT survey area is shown by the large (green) circle and the BI2006 and OM2008 survey areas are shown by the (purple) small circle and small square.[]{data-label="fig:sampleW"}](sample_w-eps-converted-to.pdf){width="\columnwidth"}

[lllddl]{} Catalogue & Reference(s) & Epoch of observation & & & 