PASS: 38 exact checks, with certified infinite-series tails.
Unit: [(0, (1, 0)), (12, (1, 0)), (16, (2, 0)), (20, (5, 0)), (24, (8, 0)), (28, (14, 0)), (32, (19, 0)), (36, (28, 0)), (40, (36, 0)), (44, (48, 0)), (48, (59, 0))]
Longitude square: [(4, (-1, 0)), (8, (-2, 0)), (12, (-3, 0)), (16, (-4, 0)), (20, (-4, 0)), (24, (-6, 0)), (28, (-6, 0)), (32, (-9, 0)), (36, (-12, 0)), (40, (-19, 0)), (44, (-27, 0)), (48, (-43, 0))]
Filled vacuum: [(0, (1, 0)), (4, (1, 0)), (8, (2, 0)), (12, (4, 0)), (16, (6, 0)), (20, (9, 0)), (24, (14, 0)), (28, (20, 0)), (32, (28, 0)), (36, (40, 0)), (40, (55, 0)), (44, (75, 0)), (48, (102, 0))]
