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Term:
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SPI time scale:
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6-Month
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PERTH AIRPORT -AUSTRALIA
Lat.: 31.92 °S / Lon.: 115.97°E Height: 20(m)
----download in csv file
Year/Month
Observation
Normal
SPI
Mean Temp.
[degC]
Max. Temp.
(Monthly Mean)
[degC]
Min. Temp.
(Monthly Mean)
[degC]
Precip.
[mm]
Mean Temp.
[degC]
Precip.
[mm]
3-Month
6-Month
12-Month
2017-09
15.2
20.8
9.7
80
14.6
77.7
0.84
-0.98
-0.38
2017-10
17.0
23.2
10.8
26
17.1
33.3
0.38
-0.75
-0.42
2017-11
22.7
30.0
15.4
2
20.1
28.9
-0.57
-0.70
-0.45
2017-12
23.5
30.6
16.4
29
22.8
9.3
-0.52
0.53
-0.31
2018-01
24.5
31.7
17.3
84
24.7
15.2
1.74
1.16
0.02
2018-02
24.2
30.8
17.7
0
24.8
16.6
1.57
0.76
-0.57
2018-03
23.8
30.5
17.1
1
22.9
17.6
1.06
0.46
-0.71
2018-04
19.8
26.5
13.2
10
19.7
30.0
-1.89
0.28
-0.64
2018-05
17.3
24.2
10.4
72
16.2
79.8
-1.21
0.21
-0.57
2018-06
14.1
19.3
8.9
121
13.9
124.7
-0.81
-0.33
0.02
2018-07
14.2
19.1
9.2
180
13.0
137.1
-0.15
-0.65
0.04
2018-08
13.2
18.5
7.8
173
13.4
120.6
0.59
-0.04
0.25
2018-09
14.4
20.6
8.1
38
14.6
77.7
0.67
-0.23
-0.07
2018-10
18.2
23.8
12.6
35
17.1
33.3
0.31
-0.06
0.01
2018-11
19.1
25.7
12.5
5
20.1
28.9
-1.40
-0.05
0.03
2018-12
22.7
30.3
15.2
0
22.8
9.3
-1.19
0.20
-0.19
2019-01
23.5
31.3
15.8
6
24.7
15.2
-1.41
-0.17
-0.77
2019-02
24.8
32.2
17.4
0
24.8
16.6
-1.03
-1.83
-0.81
2019-03
24.1
31.0
17.2
4
22.9
17.6
-1.08
-1.62
-0.78
2019-04
19.3
26.0
12.6
34
19.7
30.0
-0.64
-1.35
-0.60
2019-05
15.3
22.5
8.0
12
16.2
79.8
-2.19
-2.58
-1.20
2019-06
14.4
19.6
9.2
166
13.9
124.7
-0.69
-1.11
-0.75
2019-07
13.8
19.3
8.4
100
13.0
137.1
-1.11
-1.31
-1.36
2019-08
14.0
20.2
7.8
116
13.4
120.6
-0.38
-1.21
-2.04
Note) Background colors of the Standardized Precipitation Indices (SPIs) cell in the table are changed in accordance with the degree of dryness only when the values become below -1.0. It is noted that the SPI value with -9999 (9999) will be displayed in the case of extreme low (high) precipitations where occurrence frequencies of such event are significantly small during a certain period. "Occurrence frequencies are significantly small" means cumulative probability equals zero (one) or is very close to zero (one).