daily maximum
2.The principles of temperature observation on different underlying surfaces is described. The temperatures on pitch,cement and clay surfaces from December 2002 to September 2003 were analyzed,including daily mean temperature,daily maximum temperature,daily minimum temperature,diurnal temperature range and the differences from air temperature.
4.Penman Monteith equation was used to compute daily ET0 for five stations: Dali,Yuanjiang,Baoshan,Kunming,and Jinghong,based on the history meteorological data range from 46 to 48 years,and monthly ET0 series of the other 25 meteorological stations from 1961 to 2000.The most important influence factor of daily ET0 is daily maximum temperature.
7.On the basis of the statistics of the meteorological data day by day in summer(5~9)from 1985 to 2004 in Xiangtan,extremely high temperature incident(daily maximum temperature more than 35℃),rainstorm(daily total precipitation more than 50mm) and extreme drought incident(continuous days without precipitation) are analyzed.
9.The longitudinal RCC cofferdam covered with a conventional concrete was built with the advanced tyre belt conveyor and tower belt conveyor, with a maximum monthly placement of more than 180, 000 m3,a maximum daily placement of more than 30,000 m3,and a maximum placement area of up to 5, 252. 8 m2. The construction quality met the design requirements,with a mean compactive density of 2,453 kg / m3 and an acceptance ratio of 98. 7%.

