I stopped checking my daily stats this year although I confess I monitor my earnings every few days in the hope they'll show on upward trend instead of the downhill run they're on the past few months.

My take is that earnings on a story cannot be compared in terms of number of readers etc. We need to remember that a reader's subscription is allocated pro rata according to how many stories they read in any one month.

Don't ask me how Medium calculates that on a daily basis, but my logic says the more stories a reader reads, the less a writer's earnings will be, and the less a reader reads, the more a writer's earnings will be.

Hope my nonsense makes sense :)