State broadcasters coverage of minor parties

An interesting analysis of time given to minor parties by the two state broadcasters is here.

My summary is:

So in terms of favourable coverage Opportunity and Greens get five to seven times more than ACT and NZF. Also TPM got zero.

Greens had the most unfavourable coverage also, while Opportunity had the highest ratio of favourable to unfavourable. NZ First and TPM were the only parties with more unfavourable and than favourable coverage.