| | No regressors | An intercept | A linear time trend |
| (a) South Africa | DURBAN | 0.251 (0.201, 0.316) | 0.251 (0.202, 0.317) | 0.244 (0.198, 0.303) | PRETORIA | 0.274 (0.215, 0.347) | 0.274 (0.216, 0.349) | 0.278 (0.218, 0.356) | CAPE TOWN | 0.185 (0.137, 0.244) | 0.185 (0.137, 0.244) | 0.184 (0.136, 0.244) |
| (b) Côte d’Ivoire | BONDOUKOU | 0.311 (0.263, 0.365) | 0.309 (0.261, 0.367) | 0.297 (0.244, 0.355) | GAGNOA | 0.367 (0.303, 0.441) | 0.370 (0.307, 0.455) | 0.359 (0.282, 0.444) | ABIDJAN | 0.330 (0.270, 0.404) | 0.330 (0.270, 0.404) | 0.330 (0.270, 0.404) |
| (c) Kenya | KISUMU | 0.357 (0.296, 0.435) | 0.360 (0.298, 0.434) | 0.358 (0.291, 0.443) | MOMBASA | 1.117 (0.949, 1.291) | 1.116 (0.948, 1.290) | 1.116 (0.948, 1.290) | NAIROBI | 0.448 (0.353, 0.567) | 0.452 (0.365, 0.576) | 0.441 (0.336, 0.563) |
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