-/* We'll have multiple calibration levels
-* so that we can provide an estimation as fast as possible
-*/
-static const float min_diffs[CAL_STEPS] = { 0.2, 0.4, 0.6, 1.0 };
-static const float max_sqr_errs[CAL_STEPS] = { 10.0, 8.0, 5.0, 3.5 };
-static const unsigned int lookback_counts[CAL_STEPS] = { 3, 4, 5, 6 };
-
-