GH made spatial probabilities in 1993 and included the artwork in spatial probabilities 1993: Watercolours by Gail Hastings at the Anna Schwartz Gallery, Melbourne, in 1993. spatial probabilities is a standalone artwork. The artwork's medium includes watercolour and lead pencil on paper, measuring, overall, 14.85 x 10.5. spatial probabilities is in a private collection: Melbourne, 1993.