Output of tree leaves:

bounding box x range: (-1e+06,4.25]
bounding box y range: (-1e+06,5.75]
point (1.5,5.5)
point (3.5,3.5)

bounding box x range: (4.25,6]
bounding box y range: (-1e+06,5.75]
point (5,4.5)

bounding box x range: (-1e+06,4.75]
bounding box y range: (5.75,1e+06]
point (3,7)
point (4,6)

bounding box x range: (4.75,6]
bounding box y range: (5.75,1e+06]
point (5.5,9)

bounding box x range: (6,9.25]
bounding box y range: (-1e+06,6.25]
point (7.5,5)
point (9,4)

bounding box x range: (9.25,1e+06]
bounding box y range: (-1e+06,6.25]
point (9.5,2.5)

bounding box x range: (6,1e+06]
bounding box y range: (6.25,1e+06]
point (6.5,8)
point (8,7.5)

Points in range x= (2.5,7]  y= (5,8.5]
  (3,7)
  (4,6)
  (6.5,8)
Empty range  x= (4.5,8]  y= (1,4]
Exact match for (5,4.5)?  Yes
Exact match for (6.5,7)?  No
Partial matches for (5,4.5)
  (5,4.5)
Partial matches for (6.5,7)
  (3,7)
  (6.5,8)
No partial matches found for (6,6.5)
Nearest point to (5.75,7.5) is (6.5,8)
Nearest point to (5,9) is (5.5,9)
Nearest point to (3,8) is (3,7)
Nearest point to (-1,-2) is (3.5,3.5)