Fig. 2
Kepler TTV variability in minutes versus transit depth in ppt for the 60 KOIs that are included in KOINet (colored rectangles). The squares are color-coded depending on the Kepler magnitude of the host star. Black circles show all the KOIs presenting TTVs with a Kepler variability larger than 1 minute. Vertical and horizontal dashed lines indicate the ~1 ppt and 2-min limits for KOINet.
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