PET category	Number	Percentage	Percentage of total PETs	Order
Total PETs	232,877,491	NA	NA	(1)
Valid PETs after linker filtering	120,435,501	51.72% of (1)	51.72% of (1)	(2)
Uniquely Mapped same-linker PETs	100,610,634	83.54% of (2)	43.2% of (1)	(3)
Merging same same-linker PETs	55,099,568	54.77% of (3)	23.66% of (1)	(4)
Merging similar same-linker PETs	53,204,954	96.56% of (4)	22.85% of (1)	(5)
Self-ligation PETs	16,070,007	30.2% of (5)	6.9% of (1)	(6)
Inter-ligation PETs	26,778,613	50.33% of (5)	11.5% of (1)	(7)
Other PETs with short distance	10,356,334	19.46% of (5)	4.45% of (1)	(8)
Peaks from self-ligation	4,331	NA	NA	(9)
Interacting pairs	767,696	NA	NA	(10)