This data is normalized to the modern normal. From 800k years ago until today, the temperature was and is in a stable, bounded, cycle. The left side of the two lower charts match the right of the chart just above. All of this data does cycle between cold and warm and it is characteristic of a bounded cycle. During the most recent ten thousand years, the data has converged to a cycle with an extremely stable more narrow bounded range. Modern instrumented temperature data is still well inside the range of this same ten thousand year cycle.
Eight Hundred Thousand Years