Out of 9,040 data points, 2,610 data points were related to the stormy condition while, the remaining 6,430 data points were for the windy condition. 1,500 out of 2,610 data points for the stormy condition were selected randomly as the training data, 200 data points were chosen as the validation data, and the 910 remaining data points were considered as the testing data. At the windy condition, 3,500 out of 6,430 data points were selected randomly as the training data and 500 data points were chosen as the validation data. The 2,430 remaining data points were selected as the testing data set. Table 1 outlines statistical characteristics of the data sets used to develop the estimator models. In this table, the maximum, minimum, average, and range of the training, validation, and testing data are reported for each input variable.

Table 1

Statistical characteristics of data sets used for developing models to estimate coastal current velocities

.	.	.	.	.	.	.	.	.
Training data (numbers = 5,000)
Avg.	7.112	1.53	12.4	10.80	−0.321	0.191	0.011	0.0207
Min.	0.40	0.17	4.98	0.24	−1.55	0	−0.58	−0.142
Max.	11. 2	6.06	30.3	17.2	1.56	1.46	0.609	0.797
Range	10.8	5.89	25.32	16.96	3.11	1.46	1.189	0.939
Validation data (numbers = 700)
Avg.	6.88	1.832	7.92	6.73	0.220	0.262	0.0421	0.0732
Min.	3.8	0.27	6.20	0.285	−1.497	0.0	−0.288	−0.079
Max.	10.5	4.18	10.00	16.15	1.560	1.239	0.460	0.532
Range	6.70	3.91	3.80	15.87	3.061	1.239	0.748	0.611
Testing data (numbers = 3,340)
Avg.	7.16	1.721	8.57	8.431	−0.375	0.272	0.0922	0.0841
Min.	2.90	0.18	4.98	0.24	−1.560	0.00	−0.35	−0.142
Max.	11.1	6.06	15.80	16.23	1.559	1.01	0.6	0.797
Range	8.20	5.88	10.82	15.99	3.119	1.01	0.95	0.939

.	.	.	.	.	.	.	.	.
Training data (numbers = 5,000)
Avg.	7.112	1.53	12.4	10.80	−0.321	0.191	0.011	0.0207
Min.	0.40	0.17	4.98	0.24	−1.55	0	−0.58	−0.142
Max.	11. 2	6.06	30.3	17.2	1.56	1.46	0.609	0.797
Range	10.8	5.89	25.32	16.96	3.11	1.46	1.189	0.939
Validation data (numbers = 700)
Avg.	6.88	1.832	7.92	6.73	0.220	0.262	0.0421	0.0732
Min.	3.8	0.27	6.20	0.285	−1.497	0.0	−0.288	−0.079
Max.	10.5	4.18	10.00	16.15	1.560	1.239	0.460	0.532
Range	6.70	3.91	3.80	15.87	3.061	1.239	0.748	0.611
Testing data (numbers = 3,340)
Avg.	7.16	1.721	8.57	8.431	−0.375	0.272	0.0922	0.0841
Min.	2.90	0.18	4.98	0.24	−1.560	0.00	−0.35	−0.142
Max.	11.1	6.06	15.80	16.23	1.559	1.01	0.6	0.797
Range	8.20	5.88	10.82	15.99	3.119	1.01	0.95	0.939

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