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Table 2

Criteria scale and units

Criterion no.UnitScale
1234
C1 Hours C1 > 5 3 < C1 ≤ 5 1.5 < C1 ≤ 3 C1 ≤ 1.5 
C2 Access Bad access (only foot access. Station may not be accessible during part of the year) Regular access (access by 4 × 4 vehicle but track in bad state. Station may not be accessible during part of the year) Good access (unpaved track) Very good access (major road or close to) 
C3 Existence of obstacles Bad location (presence of trees, building, cables)     Very good location (no obstacles) 
C4 Strahler number Station not located in strategic area (small affluent, before main confluence, etc.). Strahler number = 1 Station located upstream. Strahler number = 2 Station located after a major confluence. Strahler number = 3 Station located at the basin outlet. Strahler number >3 
C5 Location Bad representativeness: rain gauge in the valley bottom surrounded by hills. Stream gauge on a small and non-permanent tributary Regular representativeness: rain gauge on the hill slope, surrounded by hills. Stream gauge on a small but permanent tributary Good representativeness: rain gauge on the hill slope, with no hill shadow. Stream gauge on a main but non-permanent stream Very good representativeness: rain gauge in high and open areas. Stream gauge on a main permanent stream 
C6 r < 0.5 0.5 ≤ r < 0.65 0.65 ≤ r < 0.8 r > 0.8 
C7 Currency High (new station located in area of difficult access) Regular (new station but in area of easy access) Low (new station nearby existing stations) Very low (existing stations) 
C8 Risk degree High risk of vandalism/equipment theft (station out of inhabited area visible from road or major path) Medium risk (station out of inhabited area but not visible from roads and major path) Low risk (station located near inhabited areas) No risk (station located inside a private area) 
C9 Years C9 < 5 5 ≤ C9 < 10 10 ≤ C9 < 30 C9 ≥ 30 years 
C10 Ratio full years data/total number of years C10 < 50% 50 ≤ C10 < 80% 80% ≤ C10 < 100% C10 = 100% 
C11 Percentage of users' approbation Low (C11 < 25%) Medium (25% ≤ C11 < 50%) Good (50% ≤ C11 < 75%) High (75% ≤ C11 < 100%) 
Criterion no.UnitScale
1234
C1 Hours C1 > 5 3 < C1 ≤ 5 1.5 < C1 ≤ 3 C1 ≤ 1.5 
C2 Access Bad access (only foot access. Station may not be accessible during part of the year) Regular access (access by 4 × 4 vehicle but track in bad state. Station may not be accessible during part of the year) Good access (unpaved track) Very good access (major road or close to) 
C3 Existence of obstacles Bad location (presence of trees, building, cables)     Very good location (no obstacles) 
C4 Strahler number Station not located in strategic area (small affluent, before main confluence, etc.). Strahler number = 1 Station located upstream. Strahler number = 2 Station located after a major confluence. Strahler number = 3 Station located at the basin outlet. Strahler number >3 
C5 Location Bad representativeness: rain gauge in the valley bottom surrounded by hills. Stream gauge on a small and non-permanent tributary Regular representativeness: rain gauge on the hill slope, surrounded by hills. Stream gauge on a small but permanent tributary Good representativeness: rain gauge on the hill slope, with no hill shadow. Stream gauge on a main but non-permanent stream Very good representativeness: rain gauge in high and open areas. Stream gauge on a main permanent stream 
C6 r < 0.5 0.5 ≤ r < 0.65 0.65 ≤ r < 0.8 r > 0.8 
C7 Currency High (new station located in area of difficult access) Regular (new station but in area of easy access) Low (new station nearby existing stations) Very low (existing stations) 
C8 Risk degree High risk of vandalism/equipment theft (station out of inhabited area visible from road or major path) Medium risk (station out of inhabited area but not visible from roads and major path) Low risk (station located near inhabited areas) No risk (station located inside a private area) 
C9 Years C9 < 5 5 ≤ C9 < 10 10 ≤ C9 < 30 C9 ≥ 30 years 
C10 Ratio full years data/total number of years C10 < 50% 50 ≤ C10 < 80% 80% ≤ C10 < 100% C10 = 100% 
C11 Percentage of users' approbation Low (C11 < 25%) Medium (25% ≤ C11 < 50%) Good (50% ≤ C11 < 75%) High (75% ≤ C11 < 100%) 
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