River Height History - Last 30 readings

Date & Time Height
2019-05-22 04:30:00 0.722
2019-05-22 04:15:00 0.722
2019-05-22 04:00:00 0.723
2019-05-22 03:45:00 0.722
2019-05-22 03:30:00 0.722
2019-05-22 03:15:00 0.722
2019-05-22 03:00:00 0.722
2019-05-22 02:45:00 0.722
2019-05-22 02:30:00 0.722
2019-05-22 02:15:00 0.723
2019-05-22 02:00:00 0.723
2019-05-22 01:45:00 0.722
2019-05-22 01:30:00 0.722
2019-05-22 01:15:00 0.723
2019-05-22 01:00:00 0.723
2019-05-22 00:45:00 0.723
2019-05-22 00:30:00 0.723
2019-05-22 00:15:00 0.723
2019-05-22 00:00:00 0.723
2019-05-21 23:45:00 0.723
2019-05-21 23:30:00 0.723
2019-05-21 23:15:00 0.724
2019-05-21 23:00:00 0.724
2019-05-21 22:45:00 0.724
2019-05-21 22:30:00 0.724
2019-05-21 22:15:00 0.724
2019-05-21 22:00:00 0.725
2019-05-21 21:45:00 0.725
2019-05-21 21:30:00 0.725
2019-05-21 21:15:00 0.725

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If you want to search by dates then use a url like this:-
http://www.little-barn-cottage.co.uk/river/API_raw.php?stationReference=1990TH&from=2017-01-01&to=2017-01-10