TABLE 2.

Value by Value Definition of the Data Fields to Score DNA Damages

Field	Value	Notes	Type	Req?
1	Classification	Is damage associated with new primary particle or new exposure? And event ID.	2 Ints	Y,N
2	X,Y,Z	Spatial X, Y, Z coordinates and extent (μm)	3×3 Floats	*
3	Chromosome IDs	ID of chromosome/chromatid where damage occurred and on which arm (long/short) or specification of non-nuclear DNA type.	4 Int	*
4	Chromosome position	Location of damage within chromosome	Float	*
5	Cause	Cause of damage - direct or indirect and number	3 Int	N
6	Damage types	Types of damage at site (Base damage, SSB, DSB)	3 Int	**
7	Full break spec	Full description of strand break structure	Special	**
8	DNA sequence	DNA Base Sequence around break site	Special	N
9	Lesion time	Time of each damage induction (in ns)	Special	N
10	Particle types	PDG list of particles	Int(s)	N
11	Energies	List of kinetic energies for each particle (in MeV)	Float(s)	N
12	Translation	Starting position of each particle (in μm)	Floats	N
13	Direction	Starting direction of each particle (unit vector)	Floats	N
14	Particle time	Starting time of each particle (in ns)	Floats	N

Notes. Of the fields indicated with “*”, either field 2 or 3 and 4 are required; similarly, at least one of the “**” fields is required. “Int” = parameters that enumerate different possibilities and can take values representing integer numbers between 0 and a maximum value that depends on the field, as detailed in the Header Section. Entries designated by “Float” are decimal strings to be assigned to floating point variables when reading the SDD file content by a computer program.