1) Rainwater: sampled in June 19^th, 20^th and 23^rd in Kyoto city, Japan, 2018.

2)Number of rotations: 110 rpm

3)Diameter of rotations: 175 mm

4) Height from the bottom to the center axis: 28.6 cm.

5) Diameter of the axis: 7 mm.

6) Mounting position: 156 mm from the bottom.

7) Width of the waterwheel: 40 mm.

8) Wheel: 18 boxes (volume of each size: (W) 40 × (H) 25 × (D) 27 mm).

9) Flow rate :350 L/hr.

10) Dimensions of the unit: (H) 72 × (W) 38 × (D) 62 mm.

11) Water tank: 5 L.

12) Temperature: 24˚C.