The horizontal axis shows the time; relationships positioned towards the leftmost area of a diagram occurred at the start of the data interval considered, and those at the rightmost end occurred at the end of the data interval considered. The vertical axis shows the period; lower period bands (higher frequencies) are shown near the top and higher bands (lower frequencies) are near the bottom. Lower bands would be of interest to investors with short term horizons, whereas higher bands would be of interest to investors with longer term horizons.
— “It has also notched some tangible, if fleeting, policy victories for Mr. Orban, including the withdrawal during the Trump administration of a State Department grant to nurture independent news media in Hungary and the securing of a long-coveted Oval Office meeting for Mr. Orban in 2019 with President Donald J. Trump.”

While the platform has started accepting account registrations and deposits/withdrawals of cryptocurrencies, its services do not yet cover the entirety of the US market, as the following states have been excluded from its support as of the time of writing the review (September 19, 2019):
Cheah, E. T. and J. Fry (2015), “Speculative bubbles in Bitcoin markets? An empirical investigation into the fundamental value of Bitcoin”, Economics Letters 130, 32–36.