Specimen level

f
_{
N
}

r
_{
N
}

Slope_{
T
}

f
_{
T
}

r
_{
T
}

≥ 0.15

≥ 0.995

0.95–1.05

≥ 0.15

≥ 0.995

Site level

n

H_{
δ
}%
   
≥ 3

≤ 20%
   
 f_{
N
}, the fraction used for the bestfit line on the NRMTRM1* plot of first heating; r_{
N
}, the correlation coefficient for the bestfit line on the NRMTRM1* plot of first heating; Slope_{
T
}, the slope of the TRM1–TRM2* plot of second heating; f_{
T
}, the fraction used for the bestfit line on the TRM1–TRM2* plot of second heating; r_{
T
}, the correlation coefficient for the bestfit line on the TRM1–TRM2* plot of second heating; n, the number of the selected samples; H_{
δ
}%, the value of the coefficient of variation