At 18:31 water level is -0.03m and it will keep falling by 0.02m until the low tide at 21:11
The low tide with -0.05m is 9% of the lowest astronomical tide (-0.54m)
At 18:31 water level is -0.03m and it will keep falling by 0.02m until the low tide at 21:11
The low tide with -0.05m is 9% of the lowest astronomical tide (-0.54m)