Hello! I have csv file (attached) with any data, where first column is time. When I read into data.frame become temperature values. What it can be? data <- read.csv("rp5_vladimir2010.csv", colClasses = "character", sep = ";") names(data) data$Time data[,1] -- Всего наилучшего! greg [at] dobroe [dot] ru Григорий.