Corrections and Clarifications


See allHide authors and affiliations

Science  25 Feb 1983:
Vol. 219, Issue 4587, pp. 909
DOI: 10.1126/science.219.4587.909-b


In the report by A. E. E. Rogers et al. in the 7 January issue (p. 51). the ordinate of figure 1 was incorrectly labeled: it should have read: "Baseline length –3,928.881.60 (m)." In table 1, the source pairs were difficult to decipher because of lack of space around dashes: they should have been, for example, "0355+508 –0851+202." Finally, in table 2 the number of individual experiments (16) in which Haystack participated was omitted: in addition, the last sentence of the footnote to the table should have read: "We believe, but are not certain, that these differences are due to the uncorrected effects of the ionosphere on the Mk I observations which involved X-band frequencies only."