The way I look at Bitcoin, it's dropping most of the time. If I'd have accurate historic data I'd do the math, but if I'd have to take a guess, it feels like it's dropping 90% of the time. But when it goes up, it goes up much faster than it went down.
The hourly or minute data could show otherwise.
Thanks for digging up the data. This is indeed not what I expected. It makes me even more curious about hourly data.