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Table 7 Pearson’s correlation coefficient of observational bleaching scores against both UV and accumulated degree days for each experiment type. These values were calculated using SPSS 20

From: Establishing a minimum PMI for bone sun bleaching in a UK environment with a controlled desert-simulated comparison

Pearson’s correlation (r) Summer Winter
Femur Rib Scapula Femur Rib Scapula
UV 0.57 0.55 0.48 0.08 0.92 0.88
ADD 0.45 0.44 0.55 0.13 0.26 0.27