Table 4 Approximation by quadratic curve between deaths (/a hundred thousand people/day) and climate parameters
From: The linkage among ambulance transports, death and climate parameters in Asahikawa City, Japan
r | p | Quadratic curve (Y death, X climate parameters) | |
|---|---|---|---|
Mean air temperature (°C) | 0.264 | 0.0355 | Y = 0.0002X2−0.01X + 2.607 |
Mean of the highest air temperature (°C) | 0.269 | 0.0301 | Y = 0.0002X2−0.011X + 2.654 |
Mean of the lowest air temperature (°C) | 0.254 | 0.0449 | Y = 0.0001X2−0.008X + 2.565 |
The highest air temperature (°C) | 0.265 | 0.0342 | Y = -0.0002X2−0.007X + 2.701 |
The lowest air temperature (°C) | 0.239 | 0.0646 | |
Mean humidity (%) | 0.095 | 0.6576 | |
The lowest humidity (%) | 0.176 | 0.2312 | |
Daylight hours (hours per month) | 0.274 | 0.0263 | Y = 0.00001X2−0.005X + 2.978 |
The number of snow days (/month) | 0.245 | 0.0562 | |
Total snowfall (cm/month) | 0.267 | 0.0318 | Y = -0.000004X2 + 0.002X + 2.493 |
The highest snowfall (cm/day) | 0.266 | 0.0333 | Y = -0.001X2 + 0.019X + 2.486 |
Maximum depth of snow cover (cm/month) | 0.241 | 0.0619 |