#  Eems (langjarig maandgemiddelden)
      SOURCe : P191, SERIES='irregular'
        TIME_and_value=    0  0:00       62.2
        TIME_and_value=   15  0:00       51.8
        TIME_and_value=   45  0:00       68.2
        TIME_and_value=   76  0:00       33.5
        TIME_and_value=  107  0:00       34.0
        TIME_and_value=  137  0:00       57.8
        TIME_and_value=  168  0:00       78.5
        TIME_and_value=  198  0:00      113.6
        TIME_and_value=  229  0:00      150.9
        TIME_and_value=  260  0:00      154.4
        TIME_and_value=  288  0:00      132.9
        TIME_and_value=  319  0:00       86.1
        TIME_and_value=  349  0:00       72.5
        TIME_and_value=  365  0:00       62.2