Complex sentence: The reports were interpreted in a way that placed the epicenter near the south end of Lake Chelan, but other considerations left other plausible focal points both north and northeast of the lake, and the magnitude was estimated to be 6.5--7.0 with 95% confidence.
Split into simpler sentences: The reports were interpreted in a way that placed the epicenter near the south end of Lake Chelan, but other considerations left other plausible focal points both north and northeast of the lake. The magnitude was estimated to be 6.5--7.0 with 95% confidence.