Table 8.

Comparison of different storage methods. CR_a and CR_b are the CRs from approaches (a) and (b) when the outputs are saved directly in HFD5 format. ${\mathrm{CR}}_{\mathrm{a}}^{\mathrm{Huff}}$ and ${\mathrm{CR}}_{\mathrm{b}}^{\mathrm{Huff}}$ are the corresponding values when the Huffman codding step is applied before saving the data in HFD5 format.

PRD	1.0	0.9	0.8	0.7	0.6	0.5	0.4	0.3	0.2
CRa	40.51	37.12	33.09	29.70	25.50	22.00	16.80	10.33	6.64
${\mathrm{CR}}_{\mathrm{a}}^{\mathrm{Huff}}$	43.57	40.41	36.32	32.96	28.80	25.13	20.25	14.62	9.53
Gain %	8	9	10	11	13	14	20	42	43
tc (s)	0.13	0.13	0.13	0.14	0.14	0.14	0.15	1.15	1.15
tc (s)	4.3	4.5	5.0	5.4	5.5	6.2	8.3	10.22	15.4
Δ a)	71	64	50	45	35	30	24	15	8.5
PRD0 a)	0.750	0.675	0.640	0.550	0.484	0.400	0.300	0.230	0.150
CRb	38.64	35.41	31.86	28.53	24.93	21.03	16.21	10.07	6.56
${\mathrm{CR}}_{\mathrm{b}}^{\mathrm{Huff}}$	42.56	39.20	35.65	32.10	28.37	24.32	19.60	14.32	9.40
Gain %	10	11	12	13	14	16	21	42	43
tc (s)	0.11	0.11	0.11	0.11	0.11	0.11	0.12	0.12	0.12
tc (s)	4.1	4.0	4.5	5.2	5.4	6.7	8.1	10.7	15.5
Δ b)	92	81	69	58	47	36	25	15.5	8.5
CRRL	26.63	24.41	22.42	20.34	18.14	15,68	12.50	8.32	5.61
${\mathrm{CR}}_{\mathrm{RL}}^{\mathrm{Huff}}$	35.06	31.78	28.80	25.93	22.91	19.66	15.85	11.63	7.82
Gain %	32	30	28	27	26	25	26	40	40
tc (s)	0.12	0.12	0.12	0.13	0.13	0.13	0.13	0.14	0.16
tc (s)	4.5	4.9	6.2	6.4	7.1	7.4	9.0	12.8	19.5

CR_RL gives the CR if the outputs of method (b) are stored using the RL algorithm and the arrays are saved in HFD5 format. ${\mathrm{CR}}_{\mathrm{RL}}^{\mathrm{Huff}}$ is the corresponding CR if Huffman codding is applied before saving the arrays in HFD5 format.