I just tried to start fact checking, but the referenced dataset at http://svocats.cab.inta-csic.es/vanish/ http://svocats.cab.inta-csic.es/vanish/ doesn't see

I just tried to start fact checking, but the referenced dataset at http://svocats.cab.inta-csic.es/vanish/ http://svocats.cab.inta-csic.es/vanish/ doesn't seem to provide the time of recording (unless its the tiny unreadable markings) How was the analysis done without timestamps on the observations available in the dataset?