1 Lanugo hair is the hair that grows on the body of an unborn baby. Lanugo attempts to insulate the babyâs body because of a lack of fat.  Lanugo begins to grow around three months after conception. They hairs are fine, they are soft, and they grow everywhere on the babyâs body.
Functions: Subtotal. The Subtotal function allows you to set up a calculation in your worksheet. Then, by filtering the data, the same calculation is performed on subsets of your data. The Subtotal function ignores values in rows hidden by a filter. It can be used with Tables or any range of data. Using the Subtotal Function.
2) You can use SUBTOTAL to ignore values in hidden rows. Often, we use hide rows feature in excel to remove irrelevant items from view. You can use SUBTOTAL with special type codes so that values in hidden rows are neglected. For eg. SUBTOTAL(9,A1:A10) finds the sum of values in cells A1:A10 where as SUBTOTAL(109,A1:A10) will find sum of values in visible rows only.