The above URL is the English language version of the list of individuals from the Riga Ghetto. While there is a detailed list available from JewishGen.Org beginning at: http://www.jewishgen.org/yizkor/riga/Rig001.html#A, the list from the Latvia Holocaust Jewish Names Project seems to have additional information at this time.
The column headings include:
First and Last names, Father and Mother’s names, Birth place, Prewar residence, War residence, Gender, Fate, Place of Death, Birth year, Birth month, Birth day, Death year, Death day. Not all of the information is available for each individual. There are presently 535 pages in the database (if viewing 30 names at a time). You can change the page views by changing the number in the page box at the bottom of the screen.
"Searching the Database": the information is available in English at: http://names.lu.lv/en.html Names are based on German spellings. Please read the information provided for further details.