Tide chart:

(*) By default 'Get ASCII data' button shows last 3000 values. To get values in a time interval select interval clicking the 'Select date' button. In some cases not all datas are extracted to prevent server oveload; to set max number of extracted values add &options=precision=number_of_requested_values to web address in opened browser page. To show all datas for selected interval add &options=precision=0

Select statistic type:
Period: