PET category	Number	Percentage	Percentage of total PETs	Order
Total PETs	112,108,763	NA	NA	(1)
Valid PETs after linker filtering	54,313,732	48.45% of (1)	48.45% of (1)	(2)
Uniquely Mapped same-linker PETs	45,350,468	83.5% of (2)	40.45% of (1)	(3)
Merging same same-linker PETs	29,947,999	66.04% of (3)	26.71% of (1)	(4)
Merging similar same-linker PETs	29,094,057	97.15% of (4)	25.95% of (1)	(5)
Self-ligation PETs	9,139,573	31.41% of (5)	8.15% of (1)	(6)
Inter-ligation PETs	14,199,432	48.81% of (5)	12.67% of (1)	(7)
Other PETs with short distance	5,755,052	19.78% of (5)	5.13% of (1)	(8)
Peaks from self-ligation	6,017	NA	NA	(9)
Interacting pairs	323,113	NA	NA	(10)