Maps completed on 3/28/2019 by H. Kaplan 
Data provided by V. Hamilton

------------------------------------
Data: OTES data for Nightingale low sortie with fill factor = 1 and no phase inversion. The spectral data used are the multiple temperature-fit emissivities (mt_emissivity). Product definitions are as follows:
	
Slope1000: The "1000-800 cm-1" slope, defined as the average emissivity of OTES (level 3 x-axis) channels [113:115] divided by the average of channels [93:95].

BD440: Band depth at ~440 cm-1, defined as the average emissivity of OTES channels [60:62] plus the average emissivity of OTES channels [43:45] divided by two, divided by the average emissivity in channels [50:51].

BD350: Band depth at ~350 cm-1, defined as the average emissivity of OTES channels [34:35] plus the average emissivity of OTES channels [44:45] divided by two, divided by the average emissivity in channels [40:41].  NOTE: This value can be strongly affected by the mean emission angle of the observation - use with great caution, especially at high latitudes.

Error values for the individual input spectral index values are calculated as the standard error at each spectral average location, propagated according to the math of the final spectral index.

------------------------------------
Maps: made with 3146k spc v42 shape model (g_00800mm_spc_obj_0000n00000_v042) with MakeMaps equivalent code. Data are combined on facets with weighted average. Geometry data was downloaded on 3/23/2020 from Spocflight. Map files are subset by latitude and longitude to the region around Nightingale in order to reduce file size due to the number of facets in the global shape model we use (most of which have no spectral data overlapping them). The latitude coverage is 50 - 65 degrees, and longitude is 30 - 55 degrees. 

------------------------------------
Limitations and caveats: The suggested color stretch for these maps is mean +/- 2 standard deviations.