caption: two numbers in a series are known
exif: {"Image DocumentName": "Significant Figures The zeros shown in red are not significant. The number is precise to 4 significant digits.", "Image ImageDescription": "With numbers having a zero at the end the number of significant figures depends on the precision with which the number is known one significant digit. The number is known to the nearest ten thousand three significant digits. The number is known to the nearest hundred five significant digits. The number is known to the nearest unit. 31.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}