Table 2. Details of the sampling times and weather condition.

Year and series	Season of sampling	Weather conditions
2014 - I	Summer	22 °C, no precipitation, sunny and dry
2014 - II	Autumn	5 °C, no precipitation, cloudy and dry
2014 - III	Winter	3 °C, light rain, last precipitation occurred during the night before samplings
2015 - I	Summer	25 °C, no precipitation, sunny and dry
2015 - III	Autumn	3 °C, no precipitation, cloudy and dry
2015 - III	Winter	2 °C, no precipitation, cloudy, last precipitation occurred 2 days before samplings
2016 - I	Spring	10 °C, no precipitation, sunny, precipitation occurred 3 days before samplings
2016 -II	Summer	18 °C, no precipitation, sunny, last precipitation occurred 2 days before the sampling (heat wave of 34 °C before samplings)
2016 -III	Autumn	7 °C, no precipitation, sunny, last precipitation occurred 2 days before the sampling, large precipitation noted 2 weeks before samplings