HDF4 file: 32 data descriptors
library version = "NCSA HDF Version 4.1 Release 2, March 1998"
data description = (text block)
| The file 'epam_level2_data_1day.h' is shown below, it was used to create the data in the Vgroup named 'VG_EPAM_data_1day'.
| 
| /* Id: epam_level2_data_1day.h,v 1.1 2000/08/02 00:45:04 asc Exp $ */
| 
| #include "hdfi.h"
| 
| struct EPAM_data_1day {
| 
|   /* UT time at the start of the periods */
|   int32   year;                         /* integer year */
|   int32   day;                          /* integer day of year */
|   int32   hr;                           /* hour of day */
|   int32   min;                          /* min of hour */
|   float32 sec;                          /* seconds */
|   float64 fp_year;                      /* floating point year */
|   float64 fp_doy;                       /* floating point Day of YearDOY */
|   float64 ACEepoch;                     /* UT time in sec since 1/1/96 */
| 
|   float32 P1;
|   float32 P2;
|   float32 P3;
|   float32 P4;
|   float32 P5;
|   float32 P6;
|   float32 P7;
|   float32 P8;
| 
|   float32 unc_P1;
|   float32 unc_P2;
|   float32 unc_P3;
|   float32 unc_P4;
|   float32 unc_P5;
|   float32 unc_P6;
|   float32 unc_P7;
|   float32 unc_P8;
| 
|   float32 DE1;
|   float32 DE2;
|   float32 DE3;
|   float32 DE4;
| 
|   float32 unc_DE1;
|   float32 unc_DE2;
|   float32 unc_DE3;
|   float32 unc_DE4;
| 
|   float32 W3;
|   float32 W4;
|   float32 W5;
|   float32 W6;
|   float32 W7;
|   float32 W8;
| 
|   float32 unc_W3;
|   float32 unc_W4;
|   float32 unc_W5;
|   float32 unc_W6;
|   float32 unc_W7;
|   float32 unc_W8;
| 
|   float32 E1p;
|   float32 E2p;
|   float32 E3p;
|   float32 E4p;
|   float32 FP5p;
|   float32 FP6p;
|   float32 FP7p;
| 
|   float32 unc_E1p;
|   float32 unc_E2p;
|   float32 unc_E3p;
|   float32 unc_E4p;
|   float32 unc_FP5p;
|   float32 unc_FP6p;
|   float32 unc_FP7p;
| 
|   float32 Z2;
|   float32 Z2A;
|   float32 Z3;
|   float32 Z4;
| 
|   float32 unc_Z2;
|   float32 unc_Z2A;
|   float32 unc_Z3;
|   float32 unc_Z4;
| 
|   float32 P1p;
|   float32 P2p;
|   float32 P3p;
|   float32 P4p;
|   float32 P5p;
|   float32 P6p;
|   float32 P7p;
|   float32 P8p;
| 
|   float32 unc_P1p;
|   float32 unc_P2p;
|   float32 unc_P3p;
|   float32 unc_P4p;
|   float32 unc_P5p;
|   float32 unc_P6p;
|   float32 unc_P7p;
|   float32 unc_P8p;
| 
|   float32 E1;
|   float32 E2;
|   float32 E3;
|   float32 E4;
|   float32 FP5;
|   float32 FP6;
|   float32 FP7;
| 
|   float32 unc_E1;
|   float32 unc_E2;
|   float32 unc_E3;
|   float32 unc_E4;
|   float32 unc_FP5;
|   float32 unc_FP6;
|   float32 unc_FP7;
| 
|   float32 livetime;
| 
| };
data description = (text block)
| The file 'epam_level2_energy_levels.h' is shown below, it was used to create the data in the Vgroup named 'VG_EPAM_energy_levels'.
| 
| /* Id: epam_level2_energy_levels.h,v 1.1 2000/08/02 00:45:52 asc Exp $ */
| 
| #include "hdfi.h"
| 
| #define NUMBER_OF_MEASURMENTS  44
| 
| struct EPAM_energy_levels {
| 
|   float32 energy_lower;
|   float32 energy_upper;
|   float32 geometric_factor;
| 
| };
file description = (text block)
| Created by the ACE Science Center (ASC) --
| ACE Science Center Level 2 Software Version:  1.4
| ACE Science Center Processing Date/Time: Fri Jan 19 12:40:04 PST 2007
| For more info email us at: asc@srl.caltech.edu
| 
| For each Bartels Rotation (27.000 day periods):
| 
| 	Type of File		Number of Records
| 	-------------		-----------------
| 	1 hour			648
| 	1 day			27
| 	1 Bartels		1
| 
| The timing data at the start of the integration period in Universal
| Time (UT) is:
| 
| 	year	-	int32 year
| 	day	-	int32 day of year
| 	hr	-	int32 hour of day
| 	min	-	int32 minute of hour
| 	sec	-	float32 seconds (accurate to millisec)
| 	fp_year -       float64 fractional year
| 	fp_doy	-	float64 fractional day of year
| 	ACEepoch-	float64 ACE epoch time in seconds since Jan 1, 1996
| 			at 0hr UT
| 
| EPAM, the Electron, Proton, and Alpha Monitor, includes five telescopes of
| three different types. There are two Low Energy Foil Spectrometers (LEFS),
| which  measure flux and direction of electrons above 30 keV, and two Low
| Energy Magnetic Spectrometers (LEMS), which measure the flux and direction of
| ions greater than 50 keV. And the Composition Aperture (CA) which measures the
| composition of the ions.
| 
| The sector average fluxes are given in particles/(cm^2*Sr*sec*MeV) along with
| their statistical uncertainty, which are given as fractional errors i.e.
| 1/sqrt(N) where N is the number of particles.
| 
| The averaging procedure, used to create the flux for 1 day and Bartels
| rotation (27 day periods) from the 1 hour data, calculates the total counts
| and divides by the actual time in the period. This time is calculated from the
| sum of the livetimes (see below) in the period. The equation used is as
| follows:
| 
| 	Flux =  cnt/(deltaT*deltaE*geometrical_factor)
| 
| 		where cnt = total number of counts in time period
| 		      deltaT= actual collection time in sec
| 			  (3600 * sum of livetimes in the period)
| 		      deltaE=energy range in MeV
| 		      geometrical_factor in inits of cm^2*Sr
| 
| These are presented as float32 and are listed in sets of flux and uncertainty
| in the flux for each channel listed below:
| 
| 
| 		Telescope	Type	 	   Energy Range (MeV)
|   	W3 -	CA60		He		    0.389  -   1.280
|   	W4 -	CA60		He		    1.280  -   6.980
|   	W5 -	CA60		O		    0.465  -   1.710
|   	W6 -	CA60		O		    1.710  -  19.100
|   	W7 -	CA60		Fe		    0.239  -   0.840
|   	W8 -	CA60		Fe		    0.840  -  92.700
|    	Z2 -	WARTD		Ions with Z>1	   E >        0.70
|   	Z2A-	WARTD		Ions with Z>7	   E >        7.50
|   	Z3 -	WARTD		Ions with Z>5	   E >        2.50
|   	Z4 -	WARTD		Ions with Z>10     E >        9.00
|   	DE1-	DE		Electrons	    0.038  -   0.053
|   	DE2-	DE		Electrons	    0.053  -   0.103
|   	DE3-	DE		Electrons	    0.103  -   0.175
|   	DE4-	DE		Electrons           0.175  -   0.315
|   	E1 -	LEFS150		Electrons(+Ions)    0.045  -   0.062
|   	E2 -	LEFS150		Electrons(+Ions)    0.062  -   0.102
|   	E3 -	LEFS150		Electrons(+Ions)    0.102  -   0.175
|   	E4 -	LEFS150		Electrons(+Ions)    0.175  -   0.312
|   	FP5-	LEFS150		Ions                0.540  -   0.765
|   	FP6-	LEFS150		Ions		    0.765  -   1.220
|   	FP7-	LEFS150		Ions		    1.220  -   4.940
|   	P1 -	LEMS30		Ions		    0.047  -   0.065
|   	P2 -	LEMS30		Ions		    0.065  -   0.112
|   	P3 -	LEMS30		Ions		    0.112  -   0.187
|   	P4 -	LEMS30		Ions		    0.187  -   0.310
|   	P5 -	LEMS30		Ions		    0.310  -   0.580
|   	P6 -	LEMS30		Ions		    0.580  -   1.060
|   	P7 -	LEMS30		Ions		    1.060  -   1.910
|   	P8 -	LEMS30		Ions		    1.910  -   4.750
|   	E1p-	LEFS60		Electrons(+Ions)    0.045  -   0.062
|   	E2p-	LEFS60		Electrons(+Ions)    0.062  -   0.103
|   	E3p-	LEFS60		Electrons(+Ions)    0.103  -   0.175
|   	E4p-	LEFS60		Electrons(+Ions)    0.175  -   0.312
|   	FP5p-	LEFS60		Ions		    0.546  -   0.761
|   	FP6p-	LEFS60		Ions		    0.761  -   1.220
|   	FP7p-	LEFS60		Ions		    1.220  -   4.970
|   	P1p-	LEMS120		Ions		    0.047  -   0.066
|   	P2p-	LEMS120		Ions		    0.066  -   0.114
|   	P3p-	LEMS120		Ions		    0.114  -   0.190
|   	P4p-	LEMS120		Ions		    0.190  -   0.310
|   	P5p-	LEMS120		Ions		    0.310  -   0.580
|   	P6p-	LEMS120		Ions		    0.580  -   1.050
|   	P7p-	LEMS120		Ions		    1.050  -   1.890
|   	P8p-	LEMS120		Ions		    1.890  -   4.750
| 
| livetime  - The fraction of the nominal timing period (i.e. 1 hour,
| 	    1 day, or 27 day period) during which the instrument was
| 	    collecting data. This value is calculated from the
| 	    equation:
| 
| 	livetime = cnts /(T_secs*Flux*deltaE*geometrical_factor)
| 
| 		where livetime unitless and
| 			cnts = measured signal in particle count
| 			T_secs = nominal period in seconds;
| 			         1 hour = 3600 sec
| 				 1 day  = 86400 sec
| 				 Bartels = 2332800 sec
| 			Flux = measured signal in
| 			       particles/(cm^2*Sr*sec*Mev)
| 			deltaE = energy bandwith in MeV
| 			geometrical_factor in units of cm^2*Sr
file description = (text block)
| EPAM Instrument team contact:
| 		Dennis Haggerty
| 	Phone:	240-228-7886
| 	Org:	John Hopkins University Applied Physics Laboratory
| 	Email:	dennis.haggerty@jhuapl.edu
| 
| 	EPAM Principal Investigator:
| 		Robert Gold
| 	Phone:	240-228-5412
| 	Org:	John Hopkins University Applied Physics Laboratory
| 	Email:	robert.gold@jhuapl.edu
file description = (text block)
| W3:	 CA60 ,(0.389-1.28 MeV He),Sector Avg,1/(cm**2-s-sr-MeV)
| W4:	 CA60 ,(1.28-6.98 MeV He),Sector Avg,1/(cm**2-s-sr-MeV)
| W5:	 CA60 ,(O:0.465-1.71 MeV Species),Sector Avg,1/(cm**2-s-sr-MeV)
| W6:	 CA60 ,(O:1.71-19.1 MeV Species),Sector Avg,1/(cm**2-s-sr-MeV)
| W7:	 CA60 ,(Fe:0.239-0.840 MeV Species),Sector Avg,1/(cm**2-s-sr-MeV)
| W8:	 CA60 ,(Fe:0.840-92.7 MeV Species),Sector Avg,1/(cm**2-s-sr-MeV)
| Z2:	 WARTD ,(Z>1-E>0.7 MeV Ions),Sector Avg,1/(cm**2-s-sr)
| Z2A:	 WARTD ,(Z>7-E>7.5 MeV Ions),Sector Avg,1/(cm**2-s-sr)
| Z3:	 WARTD ,(Z>5-E>2.5 MeV Ions),Sector Avg,1/(cm**2-s-sr)
| Z4:	 WARTD ,(Z>10-E>9.0 MeV Ions),Sector Avg,1/(cm**2-s-sr)
| DE1:	 DE ,(0.038-0.053 MeV Electrons),Sector Avg,1/(cm**2-s-sr-MeV)
| DE2:	 DE ,(0.053-0.103 MeV Electrons),Sector Avg,1/(cm**2-s-sr-MeV)
| DE3:	 DE ,(0.103-0.175 MeV Electrons),Sector Avg,1/(cm**2-s-sr-MeV)
| DE4:	 DE ,(0.175-0.315 MeV Electrons),Sector Avg,1/(cm**2-s-sr-MeV)
| 
| E1:	 LEFS150 ,(0.045-0.062 MeV Electrons (+Ions) ),Sector Avg,1/(cm**2-s-sr-MeV)
| E2:	 LEFS150 ,(0.062-0.102 MeV Electrons (+Ions) ),Sector Avg,1/(cm**2-s-sr-MeV)
| E3:	 LEFS150 ,(0.102-0.175 MeV Electrons (+Ions) ),Sector Avg,1/(cm**2-s-sr-MeV)
| E4:	 LEFS150 ,(0.175-0.312 MeV Electrons (+Ions) ),Sector Avg,1/(cm**2-s-sr-MeV)
| FP5:	 LEFS150 ,(0.540-0.765 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| FP6:	 LEFS150 ,(0.765-1.22 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| FP7:	 LEFS150 ,(1.22-4.94 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P1:	 LEMS30 ,(0.047-0.065 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P2:	 LEMS30 ,(0.065-0.112 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P3:	 LEMS30 ,(0.112-0.187 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P4:	 LEMS30 ,(0.187-0.310 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P5:	 LEMS30 ,(0.310-0.580 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P6:	 LEMS30 ,(0.580-1.06 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P7:	 LEMS30 ,(1.06-1.91 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P8:	 LEMS30 ,(1.91-4.75 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| 
| E1':	 LEFS60 ,(0.045-0.062 MeV Electrons (+Ions) ),Sector Avg,1/(cm**2-s-sr-MeV)
| E2':	 LEFS60 ,(0.062-0.103 MeV Electrons (+Ions) ),Sector Avg,1/(cm**2-s-sr-MeV)
| E3':	 LEFS60 ,(0.103-0.175 MeV Electrons (+Ions) ),Sector Avg,1/(cm**2-s-sr-MeV)
| E4':	 LEFS60 ,(0.175-0.312 MeV Electrons (+Ions) ),Sector Avg,1/(cm**2-s-sr-MeV)
| FP5':	 LEFS60 ,(0.546-0.761 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| FP6':	 LEFS60 ,(0.761-1.22 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| FP7':	 LEFS60 ,(1.22-4.97 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P1':	 LEMS120 ,(0.047-0.066 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P2':	 LEMS120 ,(0.066-0.114 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P3':	 LEMS120 ,(0.114-0.190 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P4':	 LEMS120 ,(0.190-0.310 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P5':	 LEMS120 ,(0.310-0.580 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P6':	 LEMS120 ,(0.580-1.05 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P7':	 LEMS120 ,(1.05-1.89 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
| P8':	 LEMS120 ,(1.89-4.75 MeV Ions),Sector Avg,1/(cm**2-s-sr-MeV)
file description = (text block)
| EPAM Release Notes from the EPAM Team - January 2007
| --------------------------------------------
| 
| The EPAM team identified a timing drift in the EPAM data. This timing
| drift was ~ 1 minute/year. The team has identified the source
| of this drift fixed the problem. The entire entire EPAM dataset has
| been regenerated.
| 
| 
| EPAM Release Notes from the EPAM Team - December 2003
| --------------------------------------------
| 
| After DOY 302, 2003, the P1-P6 channels contain fill data (-999.9).
| This is due to a sudden noise increase in the detector, which makes the output
| from these channels unreliable.
| 
| 
| EPAM Release Notes from the EPAM Team - July 2002
| --------------------------------------------
| 
| After DOY 78, 1998, the E1, E2 and E3 channels contain fill data (-999.9).
| This is due to a sudden noise increase in the detector, which makes the output
| from these channels unreliable.
| 
| After DOY 327, 2001, the P1 channel contains fill data (-999.9).
| This is due to a sudden noise increase in the detector, which makes the output
| from this channel unreliable.
| 
| 
| EPAM Release Notes from the EPAM Team - November 20, 2001
| --------------------------------------------
| 
| The LEMS30 telescope with ion channels P1-P8 (0.046 MeV< E < 4.7 MeV)
| is oriented 30 deg to the ~Sunward spacecraft spin axis.  Frequent
| spacecraft maneuvers orient the telescope in such a manner that two of
| its sectors directly observe solar Xrays and therefore are not
| responding to the indicated ions.  This response was well known from
| its progenitor (Ulysses/HISCALE).  This response has been observed
| from P1-P5 and the level 2 data has been modified in such a manner as
| to remove this from the data.  As the spacecraft is allowed to pass
| closer and closer to the solar exclusion zone this effect may become
| stronger and may effect channels higher than P5.  When an inaccurate
| response is being observed it is obvious because the intensities are
| significantly higher then one would expect from the ions under
| investigation.  We suggest that users of the level 2 LEMS30 ion data
| take this into consideration and if questions arise contact the EPAM
| team for comment.  Questions of this nature can be sent to Dennis
| Haggerty (dennis.Haggerty@jhuapl.edu).
| 
| 
| EPAM Release Notes from the EPAM Team - October 25, 2000
| --------------------------------------------
| 
| The following release note applies to ACE/EPAM data concerning time period from
| July 14-16, 2000 (Day of Year 196 to 198):
| 
| The EPAM instrument team has determined from the current available information
| that some of the EPAM ion/electron channels may not be responding properly due
| to high energy particles during the July 14-16, 2000 large solar energetic
| particle events.  We summarize our current findings on our channel responses
| in the following table.  Users who wish to use data that are in question
| should first consult with the instrument lead investigator, Dr. Robert Gold
| (robert.gold@jhuapl.edu):
| 
| ACE/EPAM Channel:	Time Period A	Time Period B		Time Period C
| DE1, DE2, DE3, DE4	OK		OK			OK
| 
| E'1, E'2, E'3, E'4,
| FP'5, FP'6, FP'7	OK		Under investigation	OK
| 
| P1, P2, P3, P4, P5,
| P6, P7, P8		OK		Under investigation	OK
| 
| P'1, P'2, P'3, P'4,
| P'5, P'6, P'7, P'8	OK		Under investigation	OK
| 
| W1, W2, W3, W5, W7	OK		Contact EPAM team	OK
| 
| W4, W6, W8		OK		Under investigation	OK
| 
| Time Period A: DOY 196 0000 - DOY 196 1000 UT
| Time Period B: DOY 196 1000 - DOY 197 2000 UT
| Time Period C: DOY 197 2000 - DOY 199 0000 UT
| 
| The EPAM team will continue to investigate the instrument response during
| these time periods, we will update the status of the EPAM data here as such
| information becomes available.
| 
| 
| EPAM Release Notes from the EPAM Team - 1998
| --------------------------------------------
| On DOY 79, 1998, electron detector channels E1, E2, and E3 were lost.  From
| this time forward, there will be only fill data (-999.9) for these channels.
data description = (text block)
| The file 'level2_record_doy.h' is shown below, it was used to create the data in the Vgroup named 'VG_level2_record_doy'.
| 
| /* Id: level2_record_doy.h,v 1.1 2000/08/02 00:47:11 asc Exp $ */
| 
| #include "hdfi.h"
| 
| /* record year/DOY association */
| struct level2_record_doy {
| 
|   int32   record_number;             /* record number */
|   int32   year;                      /* integer year */
|   int32   day;                       /* integer day of year */
|   int32   days_jan_1_1996;           /* days since January 1, 1996 UT 0 hr*/
| 
| };
vgroup "VG_EPAM_data_1day" class "VG_EPAM_LEVEL2_DATA_1DAY"
	vdata "EPAM_data_1day" class "ACE epam data 1day": fields year, day, hr, min, sec, fp_year, fp_doy, ACEepoch, P1, P2, P3, P4, P5, P6, P7, P8, unc_P1, unc_P2, unc_P3, unc_P4, unc_P5, unc_P6, unc_P7, unc_P8, DE1, DE2, DE3, DE4, unc_DE1, unc_DE2, unc_DE3, unc_DE4, W3, W4, W5, W6, W7, W8, unc_W3, unc_W4, unc_W5, unc_W6, unc_W7, unc_W8, E1p, E2p, E3p, E4p, FP5p, FP6p, FP7p, unc_E1p, unc_E2p, unc_E3p, unc_E4p, unc_FP5p, unc_FP6p, unc_FP7p, Z2, Z2A, Z3, Z4, unc_Z2, unc_Z2A, unc_Z3, unc_Z4, P1p, P2p, P3p, P4p, P5p, P6p, P7p, P8p, unc_P1p, unc_P2p, unc_P3p, unc_P4p, unc_P5p, unc_P6p, unc_P7p, unc_P8p, E1, E2, E3, E4, FP5, FP6, FP7, unc_E1, unc_E2, unc_E3, unc_E4, unc_FP5, unc_FP6, unc_FP7, livetime; 27 records
vgroup "VG_EPAM_energy_levels" class "VG_EPAM_LEVEL2_ENERGY_LEVELS"
	vdata "EPAM_energy_levels" class "ACE epam data _1day": fields energy_lower, energy_upper, geometric_factor; 44 records
vgroup "VG_level2_record_doy" class "VG_LEVEL2_RECORD_DOY"
	vdata "level2_record_doy" class "level2_record DOY table": fields record_number, year, day, days_jan_1_1996; 27 records