G32 results are different with 3 or 4 probing points

[claustro]

Hi all ,
I am experimenting on probing point and G32 .
If I use 3 probing points I receive :

G30 P0 X9 Y284 H0 Z-99999
G30 P1 X301 Y269 H0 Z-99999
G30 P2 X162.5 Y19 H0 Z-99999 S3

Manual corrections required: 0.00 turn up (0.00mm) 0.02 turn up (-0.01mm) 0.03 turn up (-0.01mm)

If I use 4 probing point the result is

G30 P0 X9 Y284 H0 Z-99999
G30 P1 X301 Y284 H0 Z-99999
G30 P2 X301 Y19 H0 Z-99999
G30 P3 X9 Y19 H0 Z-99999 S3

Manual corrections required: 0.00 turn up (0.00mm) 0.73 turn up (-0.37mm) 0.49 turn up (-0.24mm)

If I do a height map using 3 or 4 probing points the result are as follows.

3 points

4 points

What should I use?
are these results coherent?

Thank you
Andrea

[Phaedrux]

Which gives you a better first layer test print?

[fcwilt]

@claustro

How many "adjusters" do you have - 3 or 4?

Frederick