Table 6.

The expected total cost for $\beta =0.5$, $\alpha =0.3$ and usage rate (u) = 200,…,500.

τ (months)	$k$	ETC
		u = 200	u = 400	u = 500	u = 600
1	36	1293	1402	1407	1413
2	24	756.57	878.89	892.656	909.226
3	12	580.429	719.964	744.998	774.288
4	9	494.744	654.705	691.758	732.633
6	6	414.625	620.394	677.119	729.258
9	4	371.875	642.415	701.93	735.868
12	3	360.712	671.449	714.127	780.949
18	2	367.64	710.094	818.909	885.864

ETC, expected total cost.