PET category	Number	Percentage	Percentage of total PETs	Order
Total PETs	239,313,542	NA	NA	(1)
Valid PETs after linker filtering	139,465,853	58.28% of (1)	58.28% of (1)	(2)
Uniquely Mapped same-linker PETs	126,676,226	90.83% of (2)	52.93% of (1)	(3)
Merging same same-linker PETs	60,454,282	47.72% of (3)	25.26% of (1)	(4)
Merging similar same-linker PETs	58,390,125	96.59% of (4)	24.4% of (1)	(5)
Self-ligation PETs	17,639,845	30.21% of (5)	7.37% of (1)	(6)
Inter-ligation PETs	29,450,231	50.44% of (5)	12.31% of (1)	(7)
Other PETs with short distance	11,300,049	19.35% of (5)	4.72% of (1)	(8)
Peaks from self-ligation	4,480	NA	NA	(9)
Interacting pairs	1,190,707	NA	NA	(10)