...
In some cases for stations 2 and 4, these periods were only for a few days because of servicing the krypton hygrometers, so I have combined those short periods with longer periods preceding or following the short periods.
...
...
In some cases for stations 2 and 4, these periods were only for a few days because of servicing the krypton hygrometers, so I have combined those short periods with longer periods preceding or following the short periods.
...