Example figures: underflow frequency of tracer limits

Explanations

Frequency [0.0,1.0] for which the tracer underflows a given tracer limit within the period of data analysis.
Please notice that frequency cannot reach a value of 1.0 in temporarily dry areas (e.g. tidal flats).

• top left: Source of the tracer is the North Sea.
• top right: Source of the tracer is the Ems.
• middle left: Source of the tracer is the Jümme.
• middle right: Source of the tracer is the Leda.
• bottom left: --- no picture ---
• bottom right: Source of the tracer is the Westerwoldsche Aa.

value of tracer lies below 0.000889 [-]

North Sea	Ems
frequency with which the value of tracer from the North Sea lies below the tracer limit of 0.000889 [-]	frequency with which the value of tracer from the Ems lies below the tracer limit of 0.000889 [-]

Jümme	Leda
frequency with which the value of tracer from the Jümme lies below the tracer limit of 0.000889 [-]	frequency with which the value of tracer from the Leda lies below the tracer limit of 0.000889 [-]

---	Westerwoldsche Aa
	frequency with which the value of tracer from the Westerwoldsche Aa lies below the tracer limit of 0.000889 [-]

value of tracer lies below 0.0247 [-]

North Sea	Ems
frequency with which the value of tracer from the North Sea lies below the tracer limit of 0.0247 [-]	frequency with which the value of tracer from the Ems lies below the tracer limit of 0.0247 [-]

Jümme	Leda
frequency with which the value of tracer from the Jümme lies below the tracer limit of 0.0247 [-]	frequency with which the value of tracer from the Leda lies below the tracer limit of 0.0247 [-]

---	Westerwoldsche Aa
	frequency with which the value of tracer from the Westerwoldsche Aa lies below the tracer limit of 0.0247 [-]

value of tracer lies below 0.43925 [-]

North Sea	Ems
frequency with which the value of tracer from the North Sea lies below the tracer limit of 0.43925 [-]	frequency with which the value of tracer from the Ems lies below the tracer limit of 0.43925 [-]

Jümme	Leda
frequency with which the value of tracer from the Jümme lies below the tracer limit of 0.43925 [-]	frequency with which the value of tracer from the Leda lies below the tracer limit of 0.43925 [-]

---	Westerwoldsche Aa
	frequency with which the value of tracer from the Westerwoldsche Aa lies below the tracer limit of 0.43925 [-]

Closely related quantities

• exceedance frequency of tracer limits
• duration of low tracer

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back to Characteristic Numbers of Tracer Load (independent of tides)