The beginning and the end, respectively, of {HEAD ~ a respective period} having {TAIL ~ a period duration T} are thereby placed arbitrarily into the respective minimum of the angle of inclination ψ 
having
The beginning and the end , respectively , of { HEAD ~ a respective period } having { TAIL ~ a period duration T } are thereby placed arbitrarily into the respective minimum of the angle of inclination ψ
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH