27.00.00 Properties of specific nuclei listed by mass ranges (an additional heading must be chosen with these entries, where the given mass number limits are, to some degree, arbitrary)
27.10.+h A (less-than-or-equal-to) 5
27.20.+n 6 (less-than-or-equal-to) A (less-than-or-equal-to) 19
27.30.+t 20 (less-than-or-equal-to) A (less-than-or-equal-to) 38
27.40.+z 39 (less-than-or-equal-to) A (less-than-or-equal-to) 58
27.50.+e 59 (less-than-or-equal-to) A (less-than-or-equal-to) 89