Yes, I can do that. But, first, I think we need to know where Lloyd obtained these figures.
There's no clue as to the date & source from which his data is based.
Also, what is the citation for Lloyd's work?

The date and source of Lloyd's data is going to be difficult. Lloyd's Steamboat Directory was published in 1856, and I think it IS considered a source. The section in question is titled "Distances, Towns and Populations on the Mississippi River," and is found on page 231 of the facsimile 2000 reprint by Land Yacht Press, with new introduction by Gregory G. Poole. The official title of the book, from the cover page, is:
"Lloyd's Steamboat Directory and Disasters on the Western Waters, Containing the history of the first application of steam, as a motive power; The lives of John Fitch and Robert Fulton, likenesses and engraving of their first steamboats. Early scenes on the western waters, from 1798 to 1812 - History of the early steamboat navigation on western waters - Engravings of the boats. Full accounts of all the steamboat disasters since the first application of steam down to the present date, with lists of the killed and wounded - a complete list of steamboats and all other vessels now afloat on the western rivers and lakes - when and where built and their tonnage; Maps of the Ohio and Mississippi Rivers, Towns, Cities, Landings, Population and Distances correctly laid down on the Ohio, Mississippi, Missouri, Tennessee, Cumberland, Kentucky, Green, Illinois, Arkansas, White, Red and Yazoo Rivers. List of Plantations on the Mississippi River; Daguerrean Views and Sketches of Pittsburgh, Wheeling, Cincinnati, Louisville, Falls of Ohio, Nashville, Cairo, Falls of St. Anthony, Gates of the Rocky Mountains, St. Louis, New Orleans, and Mobile - Sketches of the Ohio and Mississippi Rivers and their Tributaries, Sources, Length, Area of country drained, &c. Names of all the U. S. Licensed Pilots and Engineers - Fast Time of Boats, The earthquake in 1812, &c, &c, One Hundred Fine Engravings, and Forty-Six Maps, Being a Valuable Statistical Work, as well as a Guide-Book for the Travelling Public."
by James T. Lloyd. Cincinnati, Ohio: James T. Lloyd & Co. 1856

Kind of makes you wonder how he had anything left for the text of the book.