+repeats the group contents below at least once:
\d+a Unicode decimal digit, repeated at least once
+the literal (3210 / 408 / 2016) , repeated at least once
\w+a Unicode word character, repeated at least once
the literal (3210 / 408 / 2016)
Non-Capturing Group(?: +-?\d+\.\d+){3} {3}repeats the group contents below exactly 3 times:
+the literal (3210 / 408 / 2016) , repeated at least once
-?optionally matches the literal - (4510 / 558 / 2D16)
\d+a Unicode decimal digit, repeated at least once
\.the literal . (4610 / 568 / 2E16)
\d+a Unicode decimal digit, repeated at least once
.+?any Unicode character, repeated at least once
{2}repeats the group contents below exactly 2 times:
\na line-feed (newline) character (ASCII 10)
\Zend of string, or before its final line terminator