Table 1. Structure of the dataset.

EC1	EC2	EC3	EC4	EC5	EC6	Total
7,096	12,081	15,290	2,875	1,703	1,632	40,677	Training
1,775	2,935	3,809	743	488	419	10,169	Validation
2,323	3,717	4,762	858	571	481	12,712	Testing
11,194	18,733	23,861	4,476	2,762	2,532	63,558	Total