The black-footed ferret sighting dates

<p>Dates of sightings (with months used as time units) of the black-footed ferret in Wyoming during January 1972 - December 1990 (from Solow 1993). For instance, numbers 5, 8 and 10 in one row mean that the species was sighted during that year in May, August and October.</p> <p>Solow, A.R. (1993) Inferring extinction in a declining population.Journal of Mathematical Biology,32, 79&ndash;82.</p> <p>*&nbsp;Data used with permission of&nbsp; Andrew Solow (WHOI)&nbsp; and was based on information given in the US Department of the Interior<br> records of&nbsp;the black-footed ferret sighting&nbsp; (as conveyed by Solow (1993).</p> <p>&nbsp;</p>