Grade Calculation example equation
{"Image Artist": "Rebecca Smith", "Image ExifOffset": "2136", "Image XPAuthor": "Rebecca Smith", "Image Padding": "[]", "EXIF DateTimeOriginal": "2015:02:19 09:13:32", "EXIF DateTimeDigitized": "2015:02:19 09:13:32", "EXIF SubSecTimeOriginal": "16", "EXIF SubSecTimeDigitized": "16", "EXIF Padding": "[]"}