why difficulty decreased?
in my dashboard there is a difficulty 430 - yesterday it was ~350
so yesterday he mined more coins than today ^^
24 december, 10:00 - difficulty=433.984
26 december, 10:00 - difficulty=365.129
average level of difficulty has not changed -
http://www.coinwarz.com/difficulty-charts/dogecoin-difficulty-charton calculator, with my speed and current difficulty I should be getting at least 1200 doge per hour