Table 1 Basic metrics of the network of payments
Month | Nodes n | Links m | In-degree \(\mathbb{E}[k^{(\mathrm{in})}]\) | Out-degree \(\mathbb{E}[k^{(\mathrm{out})}]\) | Density \(\rho =\frac{m}{n(n-1)}\) | Diameter d |
|---|---|---|---|---|---|---|
Jan | 1,000,555 | 3,271,861 | 6.61 | 4.20 | 3.27⋅10−6 | 20 |
Feb | 997,006 | 3,067,029 | 6.11 | 3.98 | 3.09⋅10−6 | 18 |
Mar | 1,018,164 | 3,146,559 | 6.19 | 3.98 | 3.04⋅10−6 | 18 |
Apr | 1,047,706 | 3,346,763 | 6.52 | 4.09 | 3.05⋅10−6 | 19 |
May | 1,048,803 | 3,359,315 | 6.58 | 4.08 | 3.05⋅10−6 | 20 |
Jun | 1,039,876 | 3,239,886 | 6.30 | 4.02 | 3.00⋅10−6 | 19 |
Jul | 1,091,393 | 3,510,435 | 6.44 | 4.14 | 2.95⋅10−6 | 20 |
Aug | 891,587 | 2,319,697 | 5.21 | 3.44 | 2.92⋅10−6 | 19 |
Sep | 1,041,124 | 3,465,233 | 6.80 | 4.25 | 3.20⋅10−6 | 20 |
Oct | 1,066,044 | 3,289,946 | 6.11 | 4.00 | 2.89⋅10−6 | 18 |
Nov | 1,023,692 | 3,103,365 | 6.15 | 3.90 | 2.96⋅10−6 | 18 |
Dec | 1,052,975 | 3,000,284 | 5.60 | 3.74 | 2.71⋅10−6 | 19 |