The Tec. cs wae amaisied 3. means of a SACO recordins ticrepmliewtir. A C.picol trece .Ver a mrt. a of Cw spectre is seem ca Fig. Lh. it is seen ressils tut tre -pectria is sate wp of mwilecalar Sun) caissi.n. Toe cbsetecd wevelenstas of several grosimat bands have xa noted. The por cqualit,s of che trace is Jue in pare to tae light leak oa tne fila. Results of a complete iJentificaticn are susmariced in Table 11.5. The Time histories of several prominent bands were found by obtaining aicrephotometer craces along the fils time axis. Results are stom in Fig. 11.21. The tise origin in *ach case was arbitrarily selected as the tine (on the fila record) at which detectable density was recorded, Because of the limite? cim resolution (17 psec) of the spectregragh, this time does ave correspoml aecessarily to actual zero time for light reaching the groune sles the lize of sight. The ordinate is the approximate film exposure as obtzined from the characteristic curve and an estizate of the film sensitivity. Because of un- certainty in the fila spectral sensitivity, relative exposures of the various bands are accurate to only about 50 percent. The absolute exposure at any cne wavelength is certain within less chan an order of magnitude. A sore cucplete discussion of this time dependence is given by Proud, where ic is shown that the tise dependence is approximately accounced for by the lizshte transit tines froa various positions along the liste of sight. 11.7.2 Oraage Data Because of cocbined efiects of light leacage and clad cover, apectro~ graphic daca for shot Orasze eas mot very useful. A cootiszum was apparent, Bowever, ia shich sere seen woe of the 93 absorption Sands. The qualit; of Cae racore Sces mot earrast aa anal,sis ot the type carriz3 coe in the caie oF Teak. TEE er wes 3242 Haromeg 370 are deleted. Ze