Further explanation:another_jim wrote:PHYSICAL CHARACTERISTICS OF BASKETS:
Columns: B.dia is the basket diameter, H.av is the average holes size, H.sd is the hole variance, H.ar is the total area of all the holes, H.gr is whether the grid is hexagonal (0), or square(1).
Basket diameter is the linear distance across the open hole area, measured by ruler or micrometer on the bottom of the basket, given in tenths of millimeters (e.g., 430 = 43.0mm).
Average hole size is the mean hole diameter in micrometers (or microns). This is computed from the individual hole areas, and assumes hole circularity (visually, a reasonable assumption).
Hole "variance" is the standard deviation of the hole diameters, again in micrometers.
Total hole area is given in square millimeters.
Sorry for any confusion that the mixed units may have caused.