Real tides = sum of harmonic constituents, each from a gravitational source.

M2: Principal lunar (12.42h)

S2: Principal solar (12.00h)

K1: Lunisolar diurnal (23.93h)

O1: Lunar diurnal (25.82h)

Form ratio F = (K1+O1)/(M2+S2)

Current: --

Type: --