measures of central tendency
{"Image Artist": "PC", "Image ExifOffset": "2122", "Image XPAuthor": "PC", "Image Padding": "[]", "EXIF DateTimeOriginal": "2017:08:15 10:56:30", "EXIF DateTimeDigitized": "2017:08:15 10:56:30", "EXIF SubSecTimeOriginal": "37", "EXIF SubSecTimeDigitized": "37", "EXIF Padding": "[]"}