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. 2020 Aug 22;191:110101. doi: 10.1016/j.envres.2020.110101

Table 2.

Testing Panel Unit Root of Meteorological factors and COVID-19.

Variable CD CIPS ΔCIPS CADF ΔCADF
T2MDEW 25.29*** −3.933*** −5.851*** −10.932*** −20.102***
T2M_MAX 55.27*** −4.411*** −6.190*** −13.493*** −21.438***
T2M_MIN 32.65*** −3.881*** −6.077*** −10.383*** −20.475***
T2M 53.64*** −3.970*** −6.029*** −12.361*** −20.883***
WS2M 17.52*** −5.650*** −6.190*** −17.256*** −21.673***
PRECTOT 3.77*** −5.764*** −6.190*** −18.813*** −21.673***
RH2M 57.85*** −4.435*** −6.190*** −11.808*** −21.673***
PS 135.05*** −3.357*** −5.681*** −8.778*** −18.628***
RECOVERED 104.38*** −0.845 −4.081*** 5.774 −12.073***
DEATHS 125.79*** −0.892 −2.169** 5.506 −6.537***
CONFIRMED 120.52*** −1.112 −2.866*** 3.857 −5.897***

Notes: **, *** signify the rejection of the null hypothesis of cross-section independence for the CD test and stationarity for CIPS and CADF tests at p-value < 0.05 and p-value < 0.01; Δ is the first-difference operator. Legend: T2MDEW - Dew/Frost Point at 2 Meters (°С), T2M_MAX - Maximum Temperature at 2 Meters (°С), T2M_MIN - Minimum Temperature at 2 Meters (°С), T2M - Temperature at 2 Meters (°С), WS2M - Wind Speed at 2 Meters (m/s), PRECTOT – Precipitation (mm day−1), RH2M - Relative Humidity at 2 Meters (%), PS - Surface Pressure (kPa), RECOVERED - Recovered Cases of COVID-19 recorded (persons), DEATHS – Deaths of COVID-19 recorded (persons) and CONFIRMED - Confirmed Cases of COVID-19 recorded (persons).