... Parameters can be used as fixed or free parameters depending on the setting in MASK= To fix a parameter use 0. ... Use box -4 -10 9 5 and let all parameters be free in the fit : USER qfit USER QFIT FILENAME= data USER QFIT APPEND= USER QFIT AUTOVIEW=y USER QFIT INSET=n4736ave 1 Set n4736ave has 3 axes RA from -20 to 20 DEC from -31 to 20 LAMBDA from 0 to 1 BOX range for set n4736ave : RA from -20 to 20 DEC from -31 to 20 USER QFIT CLIPLOHI= ...

metrologia The leap second: its history and possible future R. A. Nelson, D. D. McCarthy , S. Malys, J. Levine, B. Guinot, H. F. Fliegel , R. L. Beard and T. R. Bartholome w Abstract. This paper reviews the theoretica l motivatio n for the leap second in the context of the historica l evolutio n of time measurement . Th e periodic insertio n of a leap second step into th e scale of Coordinate d Universal Time (UTC) necessitates frequent changes in comple x timekeepin g systems an d is currentl y th e