Table 5.

The expected total cost for $\beta =0.4$, $\alpha =0.3$ and usage rate (u) = 200,…,500.

τ(months)	$k$	ETC ($)
		u = 200	u = 400	u = 500	u = 600
1	36	1352	1420	1428	1437
2	24	819.383	905.247	925.01	947.605
3	12	646.995	755.174	788.058	823.792
4	9	565.295	697.735	742.491	787.443
6	6	493.589	673.58	731.939	777.642
9	4	463.698	695.111	745.394	793.652
12	3	464.561	714.997	778.024	857.664
18	2	490.374	785.755	873.745	900.532

ETC, expected total cost.