FUNCTION: t_3d(dat,ENERGY=en,ERANGE=er,EBINS=ebins,ANGLE=an,ARANGE=ar,BINS=bins) INPUT: dat: structure, 2d data structure filled by get_eesa_surv, get_eesa_burst, etc. KEYWORDS ENERGY: fltarr(2), optional, min,max energy range for integration ERANGE: fltarr(2), optional, min,max energy bin numbers for integration EBINS: bytarr(na), optional, energy bins array for integration 0,1=exclude,include, na = dat.nenergy ANGLE: fltarr(2,2), optional, angle range for integration theta min,max (0,0),(1,0) -90