Heat map (vertical): PPPPOPPPOPPPOPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPOPPPOPPPOPOPOPPPPPPPPPPPPPPQPQPQPQPQPQPPPPPPPPOOOOOOOOOONOOOOOOOOOONNNNOOOPPPPPPPPPPPPPPPPPQQQQQQQQQQQQQQQQQQQPQPPPQQQQQQQQQQQQQQPPPOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOPOOOPOPOPOPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP