Number

Value at past n-hour

Number of the first type of forecasting factor

Number of the second type of forecasting factor

Containing Vis

Containing Vis, T, TD, RH, WD, WS

1

n = 1

1

6

2

n = 3

3

18

3

n = 6

6

36

4

n = 9

9

54

5

n = 12

12

72

6

n = 24

24

144

7

n = 36

36

216

8

n = 48

48

288

9

n = 60

60

360

10

n = 72

72

432

11

n = 84

84

504

12

n = 96

96

576

13

n = 108

108

648

14

n = 120

120

720