Table 1.

The average RMSE out of ten simulations, for RNN with 16 and 64 hidden units and for LSTM and GRU with 8 and 32 hidden units, for the iteration with the smallest validation loss.

	RNN-16	LSTM-8	GRU-8	RNN-64	LSTM-32	GRU-32
Training	1.04e−01	9.93e−03	7.79e−03	6.28e−02	7.60e−03	6.71e−03
Validation	1.29e−01	3.61e−02	3.47e−02	8.87e−02	3.64e−02	3.50e−02
Test	1.34e−01	1.49e−02	1.00e−02	9.54e−02	1.52e−02	1.23e−02

Significant values are given in bold.