The information in brackets (indicating morning temperatures for the days in January) appears as marginal notes on one diary page and one almanac page.
“[Diary entry: 1 January 1797],” Founders Online, National Archives, https://founders.archives.gov/documents/Washington/01-06-02-0006-0001-0001. [Original source: The Diaries of George Washington, vol. 6, 1 January 1790 – 13 December 1799, ed. Donald Jackson and Dorothy Twohig. Charlottesville: University Press of Virginia, 1979, p. 228.]