Multivariable Regression and Adaptive Neurofuzzy Inference System Predictions of Ash Fusion Temperatures Using Ash Chemical Composition of US Coals

Table 1

Number of samples and range of AFTs in different US states.

State	IDT (°F)		ST (°F)		FT (°F)		Number of samples
	Min	Max	Min	Max	Min	Max
Alabama	1790	2910	1930	2910	2020	2910	519
Alaska	1966	2800	2075	2800	2160	2800	40
Arizona	2130	2290	2160	2400	2190	2480	5
Arkansas	2070	2660	2080	2700	2120	2730	21
Colorado	1960	2910	2050	2910	2230	2910	134
Georgia	2070	2800	2190	2800	2280	2800	24
Illinois	1951	2276	2024	2353	2072	2425	5
Indiana	1955	2680	1980	2785	2000	2800	33
Iowa	1905	2265	1970	2375	2020	2490	27
Kansas	1855	2050	1960	2100	2050	2170	10
Kentucky	1820	2910	1940	2800	2080	2848	204
Maryland	1940	2790	2020	2800	2320	2800	18