diff --git a/CHI.R b/CHI.R
index e8ad0cd..0e036f3 100644
--- a/CHI.R
+++ b/CHI.R
@@ -349,12 +349,12 @@ cv2df <- function(cvfilename) {
    for (s in 1:length(starts)) {
       zz <- textConnection(chifile[starts[s]:ends[s]], "r")
       ff <- rbind(ff,
-               data.frame(segment = factor(s),
+               data.frame(segment = factor(s), cycle = ceiling(factor(s)/2),
                matrix(scan(zz, what = numeric(), sep = ","),
                   ncol = 3, byrow = T)))
       close(zz)
    }
-   names(ff) <- c("segment", "potential", "current", "charge")
+   names(ff) <- c("segment", "cycle", "potential", "current", "charge")
    #
    ### Collect attributes of this experiment
    # These attributes are specific for each kind of experiment,