Table 3.
Correlation between temperature characteristics and WND incidence in three Russian Provinces in 2001–2012.
| Province: | Astrakhan | Volgograd | Rostov |
|---|---|---|---|
| Mean temperature in one or several months | Spearman’s correlation coefficient and significance level (p value) | ||
| December | 0.31 (0.32) | 0.47 (0.12) | 0.64 (0.026) 1 |
| January | 0.66 (0.020) | −0.014 (0.96) | 0.23 (0.47) |
| May | 0.38 (0.23) | 0.44 (0.15) | 0.71 (0.010) |
| June | −0.18 (0.57) | 0.64 (0.024) | 0.50 (0.095) |
| July | −0.042 (0.90) | 0.65 (0.023) | −0.007 (0.98) |
| August | −0.007 (0.98) | 0.43 (0.16) | 0.46 (0.13) |
| September | 0.40 (0.20) | 0.31 (0.33) | 0.32 (0.32) |
| December—January | 0.70 (0.011) | 0.24 (0.46) | 0.47 (0.12) |
| May—June | 0.084 (0.80) | 0.62 (0.031) | 0.69 (0.014) |
| May—July | 0.18 (0.59) | 0.89 (<0.001) | 0.48 (0.12) |
| August—September | 0.25 (0.44) | 0.42 (0.17) | 0.41 (0.18) |
1 In bold the correlation coefficients greater than zero with p < 0.05. Results for November, February, March, April and October are omitted because not statistically significant.