<sup>a</sup><sub>Symbols: √ = good conditions, × = unsuitable conditions, - = marginally acceptable conditions, NR = not recommended, NA = not applicable, M = with special modifications.</sub><br> | <sup>a</sup><sub>Symbols: √ = good conditions, × = unsuitable conditions, - = marginally acceptable conditions, NR = not recommended, NA = not applicable, M = with special modifications.</sub><br> |