slope<12.9, 1.32<band1/band4<1.8,
tex(band1)>0.004, band2>0.048;
slope>12.9, 1.40<band1/band4<1.8,
tex(band1)>0.07, band2>0.048
slope<24, 1.28<band1/band4<1.8,
tex(band1) >0.006, band2>0.052;
24<Slope<35, 1.35<band1/band4<1.8,
tex(band1)>0.006, band2>0.052