Heat map (vertical): ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZYYYYYYYYYXXXXWWWWWWWWVVVVVVVVVVVUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUTUUUTTTTTTTTTTTTTTTSTTTSRRRRQQQQQQQQPPPPPPPPPPPPPPPPPPPPPQQQQQQQQQQQQQQQRRRRRRRSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTSSSSSSSSSSSSSSSSRRSSSRRRRRRRRRRRRRRRRRRRRRRRQQQQQQQQQQQQQQQQQQQQQQQQPPPQQQQQQQQQQQQQPPPPPPPPPPPPQQQQQQQQQQQQQQQQQQQSSSSSTTTTTTTTTTTTTTTTTTTUUUUUUUUUUUUUUUUUUUUUUUVVVVVVVVVVVVVVVVVVVVVVVVVVVVWWWWWWW