Table 4

Calculation of the unrecognized boulders with size smaller than one pixel.

Region Nr Nm Nn
Hatmehit pre 2358 87 425 85 067
Hatmehit post 2649 358 082 76 130
Hapi pre 692 3486 2794
Hapi post 710 828 118
Imhotep pre 2192 37 559 35 367
Imhotep post 2389 32 051 29 662
Imhotep detail pre 300 9680 9380
Imhotep detail post 341 4671 4330

Notes.Nr represents the number of counted boulders, Nm is the model number extrapolated from the trend line, and Nn is the resulting not counted boulders.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.