Activations lag sales by days to weeks, so the gap between the lines is pipeline — routers with merchants not yet switched on — not a conversion rate.
Exact rand amounts from MTN's weekly report, so the month runs to the report's last day rather than to today.
Share of activated routers by days since their SIM last recharged, measured against — the latest day MTN has reported. The final band holds devices past MTN's own ~100-day horizon and those never recharged; the feed reports both the same way, so they are not split apart here.