  We compute magnetic helicity and energy spectra from about 2485 patches of
about 100 megameters (Mm) side length on the solar surface using data from
Hinode during 2006--2017. An extensive database is assembled where we list
magnetic energy and helicity, large- and small-scale magnetic helicity, mean
current helicity density, fractional magnetic helicity, and correlation length
along with the Hinode map identification number (MapID), as well as Carrington
latitude and longitude for each MapID. While there are departures from the
hemispheric sign rule for magnetic and current helicities, the weak trend
reported here is in agreement with the previous results. This is argued to be a
physical effect associated with the dominance of individual active regions that
contribute more strongly in the better resolved Hinode maps. In comparison with
earlier work, the typical correlation length is found to be 6-8 Mm, while the
length scale relating magnetic and current helicity to each other is found to
be around 1.4 Mm.
