Seasonal autocorrelation shows same-season months correlate positively with imperfect strength

Evidence

The green dashed line shows that, while the temperature 12 months later tends to be positively correlated because it is again the same season, the correlation is not perfect, because, for example, a hot noon on July 1,2005, does not imply a hot noon on July 1, 2006. Any given hour is always the same temperature as itself, so 0 days is always the strongest autocorrelation. — Eric J. Heller, Why You Hear What You Hear- An…, 366

Categorization

• XREF: A concrete data illustration (Fairbanks temperatures, 2004–2009) of autocorrelation applied outside sound — relevant to the general why-do-we-hear question via the shared method.