What is the significance of the estimated bounds printed by stats mode?
The stats mode of XTide prints estimated upper and lower bounds that are calculated based on the 6 most significant tidal constituents simultaneously taking on their maximum and minimum possible values in the prediction model. These are not true bounds in the mathematical sense, since any station having more than 6 constituents could potentially generate predictions that exceed them. However, in practice, these estimated bounds are seldom exceeded by generated predictions. Stats mode also determines and outputs the maximum and minimum predicted by the model within the span of time specified by the user. This generally provides a narrower interval, and one that is equally valid for the span of time specified. However, these bounds will vary depending on the span of time searched, while the estimated bounds are nearly constant. Actual observed heights may exceed any and all bounds of the prediction model (e.g., in case of tidal surge from a hurricane). The highest and lowest water levels
