SPOT has four spectral bands (Band 1: 430–470 nm;
Band 2: 610–680 nm; Band 3: 780–890 nm; and Band 4:
1.58–1.7 Am). The wavelength ranges of both bands used to
compute NDVI are narrower than those of AVHRR. There is
at least one observation daily acquired at 10:30 local solar
time for latitudes above 328.