Evaluate the arousal intensity of the following sentence, considering the mental state of the author. Present a score between 0 and 1, where 0 denotes extremely calm and 1 denotes extremely energetic.
Sentence: Although the C♯ major chord in measure 293, preceded by A♭ major (V) in measure 285, suggests C♯ as tonal center, the tonality is not strongly established until measure 303.