Table 2.
Summary coverage statistics for sub-Saharan Africa.
| Total population | 30 min | 60 min | 90 min | 120 min | 150 min | 180 min | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| nr. covered | % covered | nr. covered | % covered | nr. covered | % covered | nr. covered | % covered | nr. covered | % covered | nr. covered | % covered | ||
| HRSL | 837,427,969 | 738,362,867 | 88.2 | 789,665,384 | 94.3 | 808,260,473 | 96.5 | 817,316,977 | 97.6 | 822,468,235 | 98.2 | 825,661,368 | 98.6 |
| GHS-POP | 1,007,629,498 | 879,872,628 | 87.3 | 926,126,071 | 91.9 | 946,476,919 | 93.9 | 958,041,182 | 95.1 | 964,843,199 | 95.8 | 969,695,172 | 96.2 |
| GPWv4 | 1,142,381,994 | 691,184,991 | 60.5 | 864,838,798 | 75.7 | 945,653,297 | 82.8 | 991,147,422 | 86.8 | 1,019,755,993 | 89.3 | 1,039,511,968 | 91.0 |
| LandScan | 1,114,787,854 | 900,416,765 | 80.8 | 998,239,544 | 89.5 | 1,035,462,222 | 92.9 | 1,054,119,811 | 94.6 | 1,064,963,010 | 95.5 | 1,071,921,785 | 96.2 |
| WorldPop constrained | 1,135,848,278 | 916,456,304 | 80.7 | 1,015,980,775 | 89.4 | 1,057,068,975 | 93.1 | 1,078,609,302 | 95.0 | 1,091,225,178 | 96.1 | 1,099,582,164 | 96.8 |
| WorldPop unconstrained | 1,135,121,848 | 808,494,660 | 71.2 | 951,961,369 | 83.9 | 1,011,228,872 | 89.1 | 1,042,316,719 | 91.8 | 1,060,764,621 | 93.4 | 1,072,860,699 | 94.5 |
Absolute and relative accessibility coverage as visually presented in Fig. 1 for the six different gridded population data sets: HRSL, GHS-POP, GPWv4, LandScan, WorldPop top–down constrained, WorldPop top–down unconstrained. Total population is lower for HRSL because Ethiopia, Somalia, Sudan, and South Sudan are not included in the dataset released in 2018.