At 21:00 water level is -0.03m and it will keep falling by 0.12m until the low tide at 00:05
The low tide with -0.15m is 35% of the lowest astronomical tide (-0.42m)
At 21:00 water level is -0.03m and it will keep falling by 0.12m until the low tide at 00:05
The low tide with -0.15m is 35% of the lowest astronomical tide (-0.42m)