Daily Smartphone Sensing Features and Self-reported Sadness Scores, Averaged by the Participant

Averaged daily smartphone sensing features / self-reported mental health outcomes by the participant, used to calculate the correlation/scatter plot matrix in the paper. Smartphone sensing data are available on a larger range of days than those on which self-reports were submitted; only the days on which both smartphone sensing and self-report data are available were used to compute these values. The last column in the data file, num.entries, indicates the number of days on which both data are available.

1) acc.mag.rmssd: Root Mean Square of the Successive Differences in acceleration magnitude (unit: gravity)
2) loc.var: square root of variance in raw GPS coordinates
3) ent.pls: normalized Shannon entropy of the time spent at different significant places, determined by an established temporal coordinate clustering algorithm (Kang et al. 2005 "Extracting places from traces of locations")
4) unlocked.dur: number of minutes the participant's smartphone stays unlocked
5) mean.sadness: mean value of the daily end-of-day self-report of perceived sadness of the day, evaluated on a 4-point ordinal scale (0-3)
6) sd.sadness: standard deviation of the daily end-of-day self-report of perceived sadness of the day, evaluated on a 4-point ordinal scale (0-3)