We have noticed a difference in number of varialbes in the cdfs; some cdfs have 11 variables, and some cdfs have 6 variables (Ion data or Electron data).  The information below only reflects year 2005.  It listed the time range where the cdfs don't have the same set of variables.

11 Variables:				Time Ranges
---------------------------------------------------------------------------------------
EPOCH					1/1-1/6, 1/8, 1/11-1/15, 1/7-1/26, 1/28-1/31
DENSITY_ELE				2/1-2/7, 2/9-2/10, 2/12-2/28
BULK_VELOCITY_ELE			3/1-3/5, 3/7-3/31
U_ele_GSM				4/1-4/8, 4/10-4/30
TPARL_ELE				5/4-5/31
TPERP_ELE				6/1-6/30
DENSITY_ION				7/1-7/7, 7/13-7/31
BULK_VELOCITY_ION			9/5
U_ion_GSM				11/22, 11/25-11/29
TPARL_ION				12/1
TPERP_ION

6 Variables:				Time Ranges
/* For days only have Ion data */
---------------------------------------------------------------------------------------
EPOCH					1/7, 1/10, 1/16, 1/27
DENSITY_ION				2/8, 2/11
BULK_VELOCITY_ION			3/6
U_ion_GSM				4/9
TPARL_ION				7/8-7/12, 7/14
TPERP_ION				8/1-8/31
					9/1-9/4, 9/6-9/30
					10/1-10/31
					11/1-11/21, 11/23-11/24, 11/30
					12/2-12/31


6 Variables:				Time Ranges
/* For days they only have Electron data */
---------------------------------------------------------------------------------------
EPOCH					11/11/2003
DENSITY_ELE
BULK_VELOCITY_ELE
U_ele_GSM	
TPARL_ELE
TPERP_ELE