Statistics_1Var H1 definition

[webmasterpdx]

I've seen the Statistics_1Var app used to plot data in several programs. However, as part of this, somewhere it sets H1 as in these 2 examples.
H1:={"D1", "D2",1,0};
and
H1:={"D1", "D2",1,0,#FF:24h};
Can someone tell me what the values in the lists in the assignments are?
Thanks in advance
-Donald