Each line shows the ORDER NO. it belongs to and the ORDER DATE it was raised, the CATEGORY of the part, the SUPPLIER and their SUPPLIER PHONE NUMBER, the PART NUMBER, the QTY ordered, the COST EACH ARM holds for the part, the TOTAL recorded for the line, and the PART DESCRIPTION. Because one order usually covers several parts, the same ORDER NO. and ORDER DATE repeat down the page for as many lines as that order had.
Two figures sit above the table, both labelled Total:. The first is the number of lines listed. The second is the money value of them. The row under the table repeats the column names with the page's own QTY and money subtotal, so it describes the page you are looking at rather than the whole report. That footer row also renames two columns as it goes: ORDER# for ORDER NO. and RATE for COST EACH.
The PDF names some columns differently again: Order#, Phone, Rate for COST EACH and Total Amount for TOTAL.
On the oldest orders the SUPPLIER, SUPPLIER PHONE NUMBER and PART NUMBER cells can be empty, where the order was raised before those details were being recorded against it. The order and its costs are still listed; only the supplier and part references are missing.