Hardness-intensity diagrams of Cyg X-1. (a) HID using MAXI count rates from 6 h binned light curves. Light points are classified according to Grinberg et al. (2013, dashed line). Solid points denote MAXI time bins which have a NICER bin falling into the 6 h time frame, colored according to our NICER cuts. (b) HID using NICER count rates from 100 s binned light curves. Light points are colored according to our NICER criterion. Solid points denote NICER time bins which fall into the 6 h MAXI time frame and are classified according to the MAXI cuts. The NICER cuts (dash-dotted line) are chosen such that the MAXI criterion is reproduced with minimal contamination.