Plots and curved	Equations	Equation No.	Researcher (s)
○	Field Data		[17]
◇	Field Data		[15]
□	Field Data		[35]
1	$E_{m} = 2 R M R - 100 for R M R > 50$	3	[15]
2	$E_{m} = 10^{(R M R - 10) / 40}$	4	[17]
3	$E_{m} = E_{i} / 100 (0.0028 R M R^{2} + 0.9 \exp (R M R / 22.82)), E_{i} = 50 Gpa$	5	[18]
4	$E_{m} = E_{i} (0.5 (1 - \cos (π R M R / 100))), E_{i} = 50 Gpa$	6	[19]
5	$E_{m} = 0.1 {(R M R / 10)}^{3}$	7	[20]
6	$E_{m} = 10 Q_{c}^{1 / 3}$ where $Q_{c} = Q σ_{c i} / 100$	8	[4]
7	$E_{m} = (1 - \frac{d}{2}) \sqrt{\frac{σ_{c i}}{100}} \times 10^{(R M R - 10) / 40}$	9	[38]
8	$E_{m} = E_{i} {(S^{a})}^{0.4} E_{i} = 50 GPa, s = \exp ((G S I - 100) / 9)$	10	[24]
9	$E_{m} = E_{i} S^{1 / 4} E_{i} = 50 GPa, s = \exp ((G S I - 100) / 9)$	11	[37]
10	$E_{m} = 7 (\pm 3) \sqrt{Q^{'}} Q^{'} = 10 ((R M R - 44) / 21)$	12	[36]