Research Article
Contribution of Rainfall on Rooftop Rainwater Harvesting and Saving on the Slopes of Mt. Elgon, East Africa
Table 5
Descriptive statistics of the roof catchment area, water demand, and tank capacities.
| | Statistics | Maximum | Sum | Mean | Std. deviation | Variance |
| | Roof area (sqm) | 8796 | 88190 | 206.05 | 23.04 | 476.62 | | Daily water demand (litres) | 1000 | 37280 | 84.73 | 3.18 | 66.67 | | Number of days when tanks do not meet water demand | | | | | | | Dry season | 160 | 22131 | 74.02 | 1.86 | 32.19 | | Wet season | 201 | 6327 | 25.62 | 1.98 | 31.04 | | Number of days when tanks meet water demand | | | | | | | Dry season | 150 | 5528 | 15.10 | 1.24 | 23.70 | | Wet season | 300 | 26823 | 63.11 | 2.12 | 43.62 | | Tank size storage capacity (litres) | 25000 | 115897 | 307.42 | 77.40 | 1502.79 |
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