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Tuatara: Volume 20, Issue 3, November 1973

[section]

page 166
N.Z. Meteorological Service — extra atmospheric radiation averages for 5 day periods, months (February 28 days) and year units Langleys per day and Langleys. Solar constant 1.95 ly per min. Latitude 40 deg. 0 min.
Initial DatePentadeAverage Langleys Per Day
Jan11–610571048103710241007988Jan1025
Jan317–12967943918891862832Feb902
Mar213–18800768736702669636Mar722
Apr119–24603571540510482455Apr527
May125–30429406385366349334May376
May3131–36323313307303301303Jun307
Jun3037–42306313322334348364Jul335
Jul3043–48383403426451477505Aug454
Aug2949–54534565596628660693Sep632
Sep2855–60725757789820850879Oct825
Oct2861–669079339579799991016Nov982
Nov2767–72103110431053105910631064Dec1057
Dec27731062
Year679
(See de Lisle, J.F., 1966. Mean daily insolation in New Zealand, N.Z.J.Sci. 9: 992–1005, for relationship between extra-atmospheric and sea-level radiation).
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