Heat map (vertical): BBBPXXWXXWWWVVSSSSSSSVVVVVWWWMLLLLLLLLLLLLLLLLLLLLLLLLKKKKKJHGFFEEEEEEDDDDDFFFEIJJJJJJKKKKLLMMMNOOPPNMMMKKKKKKKKKKKKKKLLLLLLLMMMMLMMMNNOQQQQQQQQQQRRRRRQQQPPPPPPPOOOOOOOOOOOOPPOOOOOOOOOONNNNMMMMMLLKKKJJJJJJJJJJJJKKKKKKKKKKKKKKKKKKZZZZZZZ