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Table 4

Time evolution of the boulder height difference ΔH.

S2–S1 S3–S2 S4–S3 S5–S4 S6–S5
Boulder ΔH ± δΔH ΔH ± δΔH ΔH ± δΔH ΔH ± δΔH ΔH ± δΔH
(m) (m) (m) (m) (m)
1 0.7 ± 0.6 0.6 ± 0.6
2 0.6 ± 0.7 0.5 ± 0.6 0.5 ± 1.5 −1.1 ± 2.0
3 0.7 ± 0.7 0.5 ± 0.4 0.5 ± 1.5 −1.4 ± 2.0
4 0.7 ± 0.5 0.4 ± 0.8 0.5 ± 1.6 −1.3 ± 1.9
5 0.6 ± 0.5 0.6 ± 0.8 0.5 ± 1.4 −0.9 ± 1.7
6 0.7 ± 0.4 0.6 ± 0.6
7 0.7 ± 0.8 0.5 ± 0.7 0.5 ± 1.5 −1.4 ± 1.9
8 0.5 ± 0.3 0.5 ± 0.4 −1.0 ± 1.7 −0.2 ± 2.2
9 0.6 ± 1.0
10 0.4 ± 0.8
11 0.7 ± 0.4 0.6 ± 0.8 0.5 ± 1.2
12 0.7 ± 0.6 0.5 ± 1.1
13 0.7 ± 0.5 0.5 ± 1.2
14 0.8 ± 0.5 0.5 ± 1.1 0.5 ± 1.4 −1.4 ± 1.6 −0.4 ± 1.8
15 0.6 ± 1.0
16 0.8 ± 0.5 0.5 ± 1.1 0.5 ± 1.7 −1.6 ± 1.5 0.2 ± 1.4
17 0.7 ± 0.8 0.6 ± 1.3 0.5 ± 1.5 −1.6 ± 1.5 0.1 ± 1.9
18 0.9 ± 0.9 0.5 ± 2.0
19 ± 0.6 ± 1.5 0.5 ± 2.0 −1.8 ± 1.9 0.2 ± 2.1
20 0.8 ± 1.0
21 0.7 ± 0.9
22 0.6 ± 0.6
Weighted average 0.7 ± 0.2 0.5 ± 0.2 0.5 ± 0.3 −1.3 ± 0.6 −0.1 ± 0.9

Notes. Each time step contains information related to 22 boulders. The height differences for each boulder and the weighted averages with the associated error bars are reported.

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