Outright (Scan) Spread Tiers for ZE, ZH, ZF, ZT, VB, VH, VF, and VJ

Tiers	*New*
1	All Months

NYMEX Division Outright (Scan) Margin on ZE, ZH, ZF, ZT, VB, VH, VF, and VJ

Commodity	Clearing Member / Maintenance Margin	Member Customer Initial Margin	Non-Member Customer Initial Margin
	*New*	*New*	*New*
ZE	6000	6600	8100
ZH	6000	6600	8100
ZF	6000	6600	8100
ZT	6000	6600	8100
VB	13000	14300	17550
VH	13000	14300	17550
VF	13000	14300	17550
VJ	13000	14300	17550

Spot month margins will decline automatically during the pricing month for ZE, ZH, ZF, and ZT. The spot month margin will decay by dividing one by the number of business days during the month.

For example, the April 2008 Contracts for ZE, ZH, ZF, and ZT have initial Clearing Member Margins of $6,000 respectively. Consequently, the spot month initial margin levels would be:

Erosion Process for The 1st Nearby Month
Date	ZE	ZH	ZF	ZT
1-Apr	6000	6000	6000	6000
2-Apr	5727	5727	5727	5727
3-Apr	5455	5455	5455	5455
4-Apr	5182	5182	5182	5182
7-Apr	4909	4909	4909	4909
8-Apr	4636	4636	4636	4636
9-Apr	4364	4364	4364	4364
10-Apr	4091	4091	4091	4091
11-Apr	3818	3818	3818	3818
14-Apr	3545	3545	3545	3545
15-Apr	3273	3273	3273	3273
16-Apr	3000	3000	3000	3000
17-Apr	2727	2727	2727	2727
18-Apr	2455	2455	2455	2455
21-Apr	2182	2182	2182	2182
22-Apr	1909	1909	1909	1909
23-Apr	1636	1636	1636	1636
24-Apr	1364	1364	1364	1364
25-Apr	1091	1091	1091	1091
28-Apr	818	818	818	818
29-Apr	545	545	545	545
30-Apr	273	273	273	273

Intra-Commodity Spread Tiers for ZE, ZH, ZF, and ZT

Tiers	*New*
1	All Months

NYMEX Division Intra-Commodity Spread Margins on ZE, ZH, ZF, and ZT

Commodity	Clearing Member / Maintenance Margin	Member Customer Initial Margin	Non-Member Customer Initial Margin
	*New*	*New*	*New*
ZE	1000	1100	1350
ZH	1000	1100	1350
ZF	1000	1100	1350
ZT	1000	1100	1350