Table 2.
Pearson's correlation coefficients of variables used in the analyses.
| Standardized mortality ratio (male) | Standardized mortality ratio (female) | Amount of global solar radiation a(MJ/m2/day) b | Daily maximum temperature c(Degree Celsius) | |
| Standardized mortality ratio (male) | 1 | |||
| Standardized mortality ratio (female) | 0.46** | 1 | ||
| Amount of global solar radiation a(MJ/m2/day) b | -0.36** | -0.34** | 1 | |
| Daily maximum temperature c(Degree Celsius) | -0.57** | -0.43** | 0.38** | 1 |
Amount of global solar radiation a:Mean value of daily-accumulated solar radiation from 1971 to 2000 in Japan.
MJ/m2/day b: Megajoule per square meter per day.
Daily maximum temperature c: Mean value of daily maximum temperature from 1971 to 2000 in Japan.
**: p ≦ 0.01