## 3 Experiments and Results
### Geographical and Spatiotemporal Analysis
(**a**) Events during 2014, with maximum and minimum peaks; (**b,c**) Parzen distribution in red gradient over the map and bidimensional probability density function (PDF) representation for maximum peak on 1 January; (**d,e**) The same for minimum peak on 6 August. Figure 12: _Cont._  
For fire brigades, the maximum peak of events was registered on Sunday 21 September, with 1618 emergencies, and the minimum was on Monday 27 January, with 36 emergencies, as is illustrated in Figure 13a. In Figure 13b, it is easy to identify two main event concentrations located in Carretas (A) and Tumbaco (B) towns. Figure 13c shows the 3D Parzen distribution over the map. These peaks of events are highlighted as the most visible. Finally, Figure 13d,e shows Parzen-KDD representations for the maximum peaks registered. Carretas (A) and Tumbaco (B) emergencies can be observed in this order. It can be seen that the geographical representation was often found to be very useful to accurately locate the emergencies reported to a PSAP and similar surveillance systems [19; 40]. Figure 12: Analysis of transit emergencies. (a) Events during 2014, with maximum and minimum peaks; Typical Parzen distribution (red gradient over the map) of transit emergencies registered on a weekend (b); and on weekdays (c) of a week in December. Figure 13: _Cont._  
The PSAP of Quito covers three provinces, namely, Pichincha, Napo, and Orellana, and their respective capitals are Quito (2,644,145 inhabitants), Tena (74,158 inhabitants), and El Coca (88,106 inhabitants). The largest number of emergencies were concentrated in the Quito metropolitan district and its near towns. Their combined population is close to the 3 million persons. Napo and Orellana are two of the six Amazonic provinces of the country. The Amazonic region represents almost the 45% of the total surface of the country; less than 5% of the Ecuadorian population are living in it. This nonuniform demographic distribution explains the lower density of emergencies registered in the other two provinces when we compare these with Quito. In Figure 14a, we can observe the cities of (A) Quito, (B) Napo, and (C) El Coca. It is easy to note the concentration of events registered along January 2014. Figure 14b,c illustrates the cities of Tena and El Coca, respectively. In these cities, most of events were registered in the urban parts. The surrounding territory is essentially tropical jungle with prevailing high temperatures and humidity, very low highways, and a number of protected areas and national parks. If we add this to the low density of the population, we can easily explain the low number of events registered in both provinces compared with Quito. Nevertheless, this represents highly different event dynamics in these regions, which also needs to be adequately characterized in time and space and in statistical terms, for its adequate management. Figure 8:0 Scatterplot of the emergencies registered during January 2014 in **(a)** the three main cities of the provinces covered by the public safety answering point (PSAP); **(b)** Tena, the capital of Napo; and **(c)** El Coca, the capital of Orellana. Figure 8:1 Analysis of fire brigade emergencies. **(a)** Events during 2014, with maximum and minimum peaks; **(b,c)** Parzen distribution in red gradient over the map and bidimensional probability density function (PDF); **(d,e)** Parzen kernel density deviation via diffusion (KDD) representations for maximum peaks, circled in red, during 21 September. Parzen–KDD permits us to visualize in short scale the exact location of events on the sectors of Carretas (A) and Tumbaco (B), respectively.