1. School of Chemical Sciences; University of Auckland; Auckland New Zealand
2. Institute of Environmental Science and Research Limited (ESR); P O Box 29-181 Christchurch New Zealand
3. School of Psychology; University of Auckland; Private Bag 92019 Auckland 1142 New Zealand
4. Mt Albert Science Centre; Institute of Environmental Science and Research Limited (ESR); Private Bag 92021 Auckland 1142 New Zealand