Hello, on this zip file you have : SPOTGourma000923_3x3.bil Subset of the SPOT4/HRVIR1 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 : 23/9/2000 Acquisition Hour : 10:47:30 K-J Identification : 052-319 Samples : 151 Lines : 151 Bands : 4 Band4 : SWIR = 1580-1750 nm View zenith angle (°) : 3.20 View azimuth angle (°) : 279.10 Solar zenith angle (°) : 23.22 Solar azimuth angle (°) : 129.09 REFLECTANCE = DIGITAL COUNT / 1000 PROJECTION CHARACTERISTICS This image was geo-referenced by the CESBIO Map Projection Name : UTM 30, North Datum : WGS-84 Units : units=Meters Pixel Size (Easting) : 20.00000000 Pixel Size (Northing) : 20.00000000 Upper Left Corner Easting : 653654.389 Upper Left Corner Northing : 1696268.326 TOA reflectance (Top of Atmosphere)