faire une séquence de séquences de temps par jour en r
seqOfDays <- seq.POSIXt(min(df_meas$Time),max(df_meas$Time), by=60*60*24)
# by is in seconds
Rocku0
seqOfDays <- seq.POSIXt(min(df_meas$Time),max(df_meas$Time), by=60*60*24)
# by is in seconds