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X-ray Hardness Ratio Calculator
Compute the X-ray hardness ratio HR from soft and hard band counts, with Poisson error propagation. Free interactive tool.
Hardness ratio calculator
-0.429 ± 0.076
SoftH/S ratio: 0.400σ(S): 10.00σ(H): 6.32
−1 (soft)0+1 (hard)