ASCII Heatmap: Four Gaussian Peaks
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| 2.0                                                                            |
| |                                                                              |
|                                                                                |
| |                                                                              |
| 1.5                                                                            |
| |                                                                              |
| |                                                                              |
| 1.0                                                                            |
| |###++====-----------===============-----------====++#####                     |
| |##+++==---------------===========---------------===+++###                     |
| 0.5+===------------------=======------------------===++###                     |
| |##+++===------------===============-------------==+++####                     |
| #####+++======--=======+++++++++++========-======++++###%%                     |
| |####+++======--=======+++++++++++========-======++++###%%                     |
| |###+++===---------========+++========---------====+++###%                     |
| 0.0++===-----------------=======------------------==+++###                     |
| |#+++==------------------=======------------------===++###                     |
| |###++++===============+++++++++++===============++++####%                     |
| -0.5%%#############################################%%%%%%%                     |
| |%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%                     |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%                     |
| |%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%                     |
| |%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%                     |
| -1.0                                                                           |
| |                                                                              |
| |                                                                              |
| -1.5                                                                           |
| |                                                                              |
| |  -  -  -  -  -  -  -  -  -  -  -  -   -  -  -  -  -  -  -  -  -  -  -  -   - |
|        -2.4      -1.6       -0.8      0.0       0.8        1.6       2.4       |
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