**HAPEX SAHEL Information System**

*A joint project between CESBIO, ORSTOM and CNES*

**Comment:**- This table contains component reflectance from San Diego State University.

**Principal investigator:**- Janet FRANKLIN

**The fields of the table are:**: This column contains the name of the grid where the data was taken.**GRID_ID**: This column contains the number of the station in the grid cell.**GRID_ORDER**: This column contains the date on which the observation was made in the format DD-MMM-YY.**OBS_DATE**: This column contains the time when the observation was made, in GMT.**OBS_TIME**: This column contains the observation time ( decimal time ).**GMT**: This column contains the type of measurement (see the documentation).**MEASUREMENT_TYPE**: This column contains the component code (see the documentation).**COMPONENT_CODE**: This column contains the sample size.**SAMPLE_SIZE**: This column contains the mean solar zenith angle ( degrees ).**SOLAR_ZENITH_ANGLE**: This column contains the standard deviation for the solar zenith angle ( degrees ).**STD_SOLAR_ZENITH_ANGLE**: This column contains the mean solar azimuth angle ( degrees ).**SOLAR_AZIMUTH_ANGLE**: This column contains the standard deviation for the solar azimuth angle ( degrees ).**STD_SOLAR_AZIMUTH_ANGLE**: This column contains the mean reflectance factor for the TM Blue band.**TM_BLUE_REFLECTANCE**: This column contains the standard deviation for the reflectance factor for the TM Blue band.**STD_TM_BLUE_REFLECTANCE**: This column contains the mean reflectance factor for the TM Green.**TM_GREEN_REFLECTANCE**: This column contains the standard deviation for the reflectance factor for the TM Green band.**STD_TM_GREEN_REFLECTANCE**: This column contains the mean reflectance factor for the TM Red band.**TM_RED_REFLECTANCE**: This column contains the standard deviation for the reflectance factor for the TM Red band.**STD_TM_RED_REFLECTANCE**: This column contains the mean reflectance factor for the TM NIR band.**TM_NIR_REFLECTANCE**: This column contains the standard deviation for the reflectance factor for the TM NIR band.**STD_TM_NIR_REFLECTANCE**: This column contains the NDVI.**NDVI**: This column contains the standard deviation for the NDVI.**STD_NDVI**: This column contains the SAVI.**SAVI**: This column contains the standard deviation for the SAVI.**STD_SAVI**: This column contains the certification level for the data : T)est, C)hecked by PI, U)nchecked by PI.**CERT_LEVEL**: This column contains the revision date for the data in the format DD-MMM-YY.**REV_DATE**

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