def METHOD_NAME(self, sectorRange, coordinate):
    sectors = list(range(sectorRange[0],sectorRange[1]+1))
    numSectors = len(sectors)
    fi = ROOT.TFile(self.inFile, "READ")
    nameTree = fi.Get("nameTree")
    nameTree.GetEntry(0)
    apeTree = fi.Get("iterTree{}".format(coordinate))
    noEntries = apeTree.GetEntries()
    hists = []
    names = []
    maximum = 10
    for i,sector in enumerate(sectors):
        hist = ROOT.TH1F("hist{}_{}".format(coordinate, sector), "", noEntries, 0-0.5, noEntries-0.5)
        hist.SetTitle(";iteration number;#sigma_{align," + coordinate.lower() + "}  [#mum]")
        #~ hist.SetAxisRange(0.,100.,"Y")
        hist.SetMarkerStyle(20+i)
        hist.SetDirectory(0)
        hists.append(hist)
        no_it = 1
        for it in apeTree:
            hist.SetBinContent(no_it, 10000. * (float(getattr(it,  "Ape_Sector_{}".format(sector))))**0.5)
            no_it += 1
        if hist.GetMaximum() > maximum:
            maximum = hist.GetMaximum()
        sectorName = self.convertName(str(getattr(nameTree, "Ape_Sector_{}".format(sector))))
        names.append(sectorName)
    fi.Close()
    return hists, names, maximum