Transcriber rearranged parts of the column headings, but “as follow” (singular) in the table’s title was printed that way in the original.
Transcriber transposed the rows and columns to make the table fit within narrow constraints imposed by some handheld reading devices and Project Gutenberg’s guidelines for Plain Text. (Rows originally were columns.)
The row heading “55 to 60°” was misprinted as “55 to 66°”; corrected here.