Hello, on this zip file you have : SPOTLaprida011103_3x3TOA.bil Subset of the SPOT4/HRVIR2 Generic Binary array file, band interleaved by line (BIL) format Data format is an unsigned integer (2 bytes) Data are stored in the order (line1,band1),(line1,band2),(line1,band3),(line1,band4),(line2,band2),... Pixels are registered by their upper left corner Envi header file (.hdr) is available GENERAL CHARACTERISTICS Acquisition Date : 3/11/2001 Acquisition Hour : 14:16:24 K-J Identification : 695-424 Samples : 152 Lines : 152 Bands : 4 Band4 : SWIR = 1580-1750 nm View zenith angle (°) : 18.60 View azimuth angle (°) : 279.20 Solar zenith angle (°) : 29.74 Solar azimuth angle (°) : 47.84 REFLECTANCE = DIGITAL COUNT / 1000 PROJECTION CHARACTERISTICS This image was geo-referenced by SPOTImage (SPOTViewBasic product) Map Projection Name : UTM 20, South Datum : WGS-84 Units : units=Meters Pixel Size (Easting) : 20.00000000 Pixel Size (Northing) : 20.00000000 Upper Left Corner Easting : 716279.600 Upper Left Corner Northing : 5904909.200 TOA reflectance (Top of Atmosphere)