Table 1.
Basic statistical information about the three observing seasons of data used in this work.
| Duration | Obs. baseline (d) | Mean obs. | Median obs. | tot. # | Mean # | Median # | Mean | Median | |
|---|---|---|---|---|---|---|---|---|---|
| baseline (d) | baseline (d) | of visits | of visits | of visits | sampling | sampling | |||
| rate (d) | rate (d) | ||||||||
| Season 1 | Dec. 2011– May 2012 | 151 | 150 | 151 | 26 | 24 | 25 | 6.04 | 3 |
| Season 2 | Dec. 2013– Apr. 2014 | 101 | 101 | 101 | 20 | 19 | 20 | 5.32 | 3 |
| Season 3 | Dec. 2014– Mar. 2015 | 106 | 103 | 106 | 8 | 7 | 8 | 15.14 | 15 |
| Seasons 1+2+3 | Dec. 2011–Mar. 2015 | 1187 | 1185 | 1187 | 54 | 51 | 52 | 22.40 | 4 |
Notes. The table reports (left to right): maximum observed baseline; mean and median value of the observed baseline for the 677 sources in the main sample; total number of visits; mean and median number of visits for the 677 sources in the main sample; mean and median sampling rate.
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