Singlecoil only 4x

‘The challenge consists of two tracks: single coil (at 4x acceleration) and multi-coil (at 4x and 8x acceleration).’

Does this mean that single coil at 8x acceleration does not open?

That’s correct.

Thanks,
Tullie

By 8x accleration for single coil being ‘not open’

Does it mean that there will be no 8x acceleration data in the challenge dataset?

Or does it mean that both 4x & 8x acceleration data will be included in the dataset, but the winners will only be considered for 4x acceleration?

That’s right - there is no 8x accelerated data in the single-coil challenge set.