One zone's time + share. hi is Infinity for the open top.
hi
Infinity
Share of total in-zone time, [0, 1].
Upper edge; Infinity for the top zone.
Inclusive lower edge, in the value axis (watts / bpm / m·s⁻¹).
1-based zone number (Z1 = the lowest band).
One zone's time + share.
hiisInfinityfor the open top.