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These are values automatically calculated for nuclei, and displayed in the Nuclear charts tab

They are:

Statistic	Dimension	Formula	Description
Area	Area		the two dimensional area of the nucleus
Perimeter	Length		the length of the nuclear perimeter
Max feret	Length		the maximum caliper diameter across the nucleus
Min diameter	Length		the shortest diameter through the centre of mass of the nucleus
Variability	Angle		the square root of the sum-of-squares difference at each index between between the nuclear profile and the dataset median profile, normalised to the length of the median profile.
Ellipticity	None	H/W	the height divided by width of the nuclear bounding box in the vertically oriented nucleus
Aspect ratio	None	W/H	the inverse of ellipticity
Elongation	None	(H-W)/(H+W)	the bounding height minus the bounding width, divided by the bounding height plus the bounding width
Regularity	None	(piHW)/(4*area)	A measure of how regular the shape is; does it have rotational symmetry
Circularity	None	`(4piarea)/(perimeter^2)`	the closeness of the nucleus to a circle, between 0 and 1, where 1 is a perfect circle.
Bounding width	Length		the width of the bounding rectangle of the nucleus, after rotation to vertical
Bounding height	Length		the height of the bounding rectangle of the nucleus, after rotation to vertical
Angle between reference points	Angle		the angle between the reference point, the centre of mass, and the orientation point
Length of hook [rodent sperm only]	Length		the distance from the vertical region defined by the top and bottom vertical points to the lower x-edge of the bounding rectangle of the vertically oriented nucleus
Width of body [rodent sperm only]	Length		the distance from the vertical region defined by the top and bottom vertical points to the upper x-edge of the bounding rectangle of the vertically oriented nucleus