Evaluate the arousal intensity of the following sentence, considering the mood of the author. Give a score between 0 and 1 inclusive, where 0 is the most calm and 1 is the most energetic.
Sentence: Hence, measures 155-210 constitute the bass progression B-E♭-D♭-B; the same stepwise descent (E♭-D♭) occurred in the first theme group while F rather than B was being prolonged.