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When was tellurium assigned to Group 16?

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A color-coded periodic table of the elements displays each element's symbol and atomic number, with categories such as alkali metals, noble gases, halogens, transition metals, and actinoid elements distinguished by different background colors. — oxygen group element Modern version of the periodic table of the elements (printable).

Tellurium was assigned its place in the oxygen group (Group 16) by 1865.1

While the relationship between the first three members of the group—oxygen, sulfur, and selenium—was recognized as early as 1829, tellurium's classification within this group was established later as the periodic table was developed.1