>ReadMe.txt
>Information about data release 4
> M. A. Dayeh; 16 September 2012
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IBEX orbits and dates used to construct 6-months and annual allsky maps:
Map1:
start/end of orbits or arcs: 11-34, "00{11..34}"
date: 12/25/2008 – 06/26/2009
Map2:
start/end of orbits or arcs: 35-58, "00{35..58}"
date: 06/26/2009 – 12/26/2009
Map3:
start/end of orbits or arcs: 59-82, "00{59..82}"
date: 12/26/2009 – 06/26/2010
Map4:
start/end of orbits or arcs: 83-106, "0{0{83..99},{100..106}}"
date: 06/26/2010 – 12/26/2010
Map5:
start/end of orbits or arcs: 107-130a, "0{{107..127},130a}"
date: 12/26/2010 – 06/25/2011
Map6:
start/end of orbits or arcs: 130a-150a, "0{130b,{131..150}a,{131..149}b}"
date: 06/25/2011 – 12/24/2011
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Year1: Maps 1 & 2
Year2: Maps 3 & 4
Year3: Maps 5 & 6
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This dataset includes the following IBEX products:
1. 6-month Maps in the SC frame
2. 6-month Maps in the CG frame
3. 6-month Maps in the SC frame with Survival Probability
4. 6-month Maps in the CG frame with Survival Probability
5. RAM Yearly Maps in the SC frame without Survival Probability
6. Anti-RAM Yearly Maps in the SC frame without Survival Probability
7. RAM Yearly Maps in the HS frame without Survival Probability
8. Anti-RAM Yearly Maps in the HS frame without Survival Probability
9. RAM Yearly Maps in the SC frame with Survival Probability
10. Anti-RAM Yearly Maps in the SC frame with Survival Probability
11. RAM Yearly Maps in the HS frame with Survival Probability
12. Anti-RAM Yearly Maps in the HS frame with Survival Probability
13. IBEX-Lo, Ram and Antiram, SC frame (orbits 11 through 150q), 
    without Survival probability, Signal-to-Noise mask threshold=3
14. Survival Probabilities for IBEX-Lo and IBEX-Hi (maps only).
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Spectral figures in the paper were derived from maps at different energies.
Combined maps were calculated as:
(example of combining the first three maps)
    ;Weights (exposure times)                                                                                                                     
    wt1=tau1/(tau1+tau2+tau3)                                                                                                           
    wt2=tau2/(tau1+tau2+tau3)
    wt3=tau3/(tau1+tau2+tau3)                                                                                                                            
    ;Combined fluxes, Variances, signal-to-noise                                                                                                                      
    flux=flux1*wt1 + flux2*wt2 + flux3*wt3
    var=var1*(wt1)^2 + var2*(wt2)^2 + var3*(wt3)^2
    snr=flux/( sqrt(var) )
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Orbit culls and other data related to this release are locked on the isoc.
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