Return the values

getValues(tcbuffer) → cbufferset

SELECT asText(getValues(tcbuffer '{[Cbuffer(Point(1 1), 0.3)@2001-01-01, 
  Cbuffer(Point(1 1), 0.5)@2001-01-02)}'));
-- {"Cbuffer(Point(1 1),0.3)","Cbuffer(Point(1 1),0.5)"}
SELECT asEWKT(getValues(tcbuffer 'SRID=5676;{[Cbuffer(Point(1 1), 0.3)@2001-01-01, 
  Cbuffer(Point(1 1), 0.3)@2001-01-02)}'));
-- SRID=5676;{"Cbuffer(Point(1 1),0.3)"}

Return the points

points(tcbuffer) → bigintset

SELECT asEWKT(points(tcbuffer 'SRID=5676;{Cbuffer(Point(3 3), 0.3)@2001-01-01, 
  Cbuffer(Point(1 1), 0.5)@2001-01-02}'));
-- SRID=5676;{Point(1 1), Point(3 3)}

Return the value at a timestamp

valueAtTimestamp(tcbuffer,timestamptz) → cbuffer

SELECT asText(valueAtTimestamp(tcbuffer '[Cbuffer(Point(1 1), 0.3)@2001-01-01, 
  Cbuffer(Point(3 3), 0.5)@2001-01-03)', '2001-01-02'));
-- Cbuffer(Point(2 2),0.4)