structure(list(Time = structure(c(1, 2, 3, 4, 5, 7),
.Tsp = c(1, 6, 1), class = "ts"), 
demand = structure(c(8.3, 10.3, 19, 16, 15.6, 19.8), 
comment = "biochemical oxygen demand (mg/l)")), 
.Names = c("Time", "demand"))
