FTIR spectra of 19 palm-leaf manuscripts from the SUB

Palmbl. I 5 (35.3005) Cod. Palmbl.

III 118 (35.3363) Cod. Palmbl. II 209 (35.3209) Cod.

Palmbl. I 33 (35.3033) Cod. Palmbl.

I 24 (35.3024) Cod. Palmbl. I 170 (35.3170) Cod.

Palmbl. I 51 (35.3051) Cod. Palmbl.

II 205 (35.3205) Cod. Palmbl. II 224 (35.3224) Cod.

Palmbl. I 188 (35.3188) Cod. Palmbl.

I 28 (35.3028) Cod. Palmbl. I 11 (35.3011) Cod.

Palmbl. I 169 (35.3169) Cod. Palmbl.

I 112 (35.3112) Cod. Palmbl. III 53 (35.3299) Cod.

Palmbl. I 9 (35.3009) Cod. Palmbl.

I 110 (35.3110) Spectra The spectra were recorded with the portable FTIR spectrometer 4100 ExoScan (Agilent) in DRIFTS mode. The raw spectra are stored as .spc files in a zip archive.

Note

Due to subsequently detected contamination of the spectrometer, it cannot be ruled out that the recorded spectra are affected by outliers and biased. The results should therefore be categorised accordingly. Spectra file names are structured as follows: "Date of the measurement_Name of the instrument_accessory name_no. of scans_name of the manuscript_measurement name.spc" Date of the measurement: yyyymmdd Name of the instrument: E for ExoScan accessory name: DRIFT no. of scans: 256 name of the manuscript: Object No. (see above) measurement name: "page image name_page_area_No" page numer: area: measurement area ( leaf , ink , stain ...) No: number of measurement (on this page) Interactive visualization The "InteractiveVisualisation.html" file is a standalone website that shows the individual spectra and the chemometric analysis of the data.

The presented analysis and data should be considered as an overview. Some of the shown data is simplified for this interactive demonstration and may not reflect reality.