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RT @ZLabe: @OpportunCity @USANPN @environmentca This map is derived from the "Extended Spring Indices" (SI-x) model (https://t.co/XgzyRuYDw…
RT @ZLabe: @OpportunCity @USANPN @environmentca This map is derived from the "Extended Spring Indices" (SI-x) model (https://t.co/XgzyRuYDw…
RT @ZLabe: @OpportunCity @USANPN @environmentca This map is derived from the "Extended Spring Indices" (SI-x) model (https://t.co/XgzyRuYDw…
@OpportunCity @USANPN @environmentca This map is derived from the "Extended Spring Indices" (SI-x) model (https://t.co/XgzyRuYDwx). SI-x are based on observations of Lilac/Honeysuckle phenology. The program begin in the 1950s by a network of volunteers &am