We have a reasonably good idea of how much economic activity can go ahead at each alert level. For example, we’ve previously estimated that at Alert Level 4, the value of lost activity in Auckland is around $600m per week. For the rest of the country, a week at Level 3 results in about $300m of lost activity. But this regional split, with Auckland at Level 4 and the rest of the country at Level 3, is different to what we’ve had before, and that could throw up some new challenges for businesses. Auckland is a major part of the country’s supply chain, with not just the port, but also manufacturers, warehouses and ... (full story)