Calculation of Subgrade Moisture Index in Seasonally Frozen Regions considering Evapotranspiration at Subzero Temperatures and the Pavement Coverage Effect

Table 2

Meteorological station data.

Month	Tmax (°C)	Tmin (°C)	RHmean (1%)	uz (m/s)	N (h)
1	−6.5	−19.4	59.0	2.6	170.4
2	−2.2	−16.0	55.0	2.8	183.2
3	5.6	−8.2	53.0	2.9	225.3
4	15.1	−0.1	55.0	3.1	213.2
5	21.5	6.7	60.0	2.8	233.6
6	24.0	12.9	75.0	2.4	190.0
7	27.1	17.2	79.0	2.2	181.0
8	26.9	17.1	80.0	1.8	187.5
9	21.9	9.1	77.0	1.6	197.6
10	14.5	0.3	67.0	2.1	199.5
11	3.9	−8.0	62.0	2.5	157.7
12	−4.3	−16.2	61.0	2.5	140.8