SPI-Based Spatiotemporal Drought over Sri Lanka

Table 1

Geographical coordinates of meteorological stations used for the analysis.

No	Name of the station	Latitude	Longitude	Missing value (%)
Dry zone
1	Allai	8.4	81.32	4.8
2	Ampara	7.28	81.67	1.2
3	Angamedilla	7.85	80.92	2.1
4	Anuradhapura	8.35	80.38	0
5	Bakamuna	7.77	80.82	1.2
6	Batticaloa	7.72	81.7	0
7	Diyabeduma	7.93	80.87	1.1
8	Hambanthota	6.12	81.13	0.2
9	Hingurakgoda	8.05	80.95	4.4
10	Iranamadu	9.35	80.4	4.1
11	Jaffna	9.68	80.03	1.4
12	Kalawewa	8	80.53	2.7
13	Kannukkeni	9.2	80.8	6.6
14	Kanthale	8.35	80.98	1.6
15	Mahailuppallama	8.12	80.47	1.6
16	Mannar	8.98	79.92	0
17	Maradankadawala	8.13	80.57	3.9
18	Medawachchiya	8.55	80.48	2.1
19	Minneriya	8.05	80.9	3.5
20	Murunkan	8.83	80.05	0.9
21	Pavatkulam	8.68	80.43	3.2
22	Pothuvil	6.88	81.83	0.9
23	Puttalam	8.03	79.83	0.2
24	Tissamaharama	6.28	81.3	1.6
25	Trincomalee	8.58	81.25	1.4
Intermediate zone
26	Badulla	6.98	81.05	0
27	Bandarawela	6.83	80.98	0
28	Chilaw	7.58	79.78	1.6
29	Dandeniya	6	80.65	1.4
30	Kurunegala	7.47	80.37	0
31	Nikaweratiya	7.75	80.12	9.6
32	Wellawaya	6.73	81.1	2.1
Wet zone
33	Alupolla	6.72	80.58	0.4
34	Ambepussa	7.28	80.17	1.2
35	Avissawella	6.92	80.18	3.7
36	Chesterford	7.07	80.18	4.3
37	Colombo	6.9	79.87	0
38	Deniyaya	6.35	80.62	1.8
39	Galle	6.03	80.22	0
40	Galthura	6.7	80.28	1.6
41	Geekiyanakanda	6.6	80.12	1.6
42	Halwathura	6.72	80.2	1.1
43	Hanwella	6.88	80.12	0.4
44	Henarathgoda	7.1	79.98	1.4
45	Kaluthara	6.58	79.95	3.4
46	Katugastota	7.33	80.63	0
47	Katunayaka	7.17	79.88	0
48	Maliboda	6.88	80.43	7.1
49	Matale	7.47	80.62	0.2
50	Mawarella	6.2	80.58	4.4
51	Nuwara Eliya	6.97	80.77	0
52	Pasyala	7.15	80.13	1.1
53	Peradeniya	7.27	80.6	7.9
54	Ratnapura	6.68	80.4	0