A parameter table is a set of checked rows, not a curve. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Each parameter row is its own finite snapshot
Rows for one half, three quarters, and 1 are checked separately.
p∈{21,43,1}
The table classifies only the displayed rows
The first row is period one; the next two rows are period two.