id,central_station,telemetering_station, password,function_code,serial_number, sending_time,observed_time,gprs_signal, host_voltage,longitude,latitude, pressure_value,D31_D12,D14, D13,D12,D11, D10,D9,D8, D7,D6,D5, D4,D3,D2, D1,D0 SELECT DATE(observed_time) as date, ROUND(MAX(pressure_value), 2) as maxPressure, ROUND(MIN(pressure_value), 2) as minPressure, ROUND(AVG(pressure_value), 2) as avgPressure FROM firefighting_pressure WHERE observed_time BETWEEN #{startTime} AND #{endTime} GROUP BY DATE(observed_time) ORDER BY date SELECT telemetering_station, longitude, latitude, ROUND(AVG(pressure_value), 2) as avgPressure FROM firefighting_pressure WHERE observed_time BETWEEN #{startTime} AND #{endTime} GROUP BY telemetering_station, longitude, latitude SELECT ROUND(gprs_signal) as signalLevel, ROUND(AVG(pressure_value), 2) as avgPressure, ROUND(STDDEV(pressure_value), 2) as pressureStdDev FROM firefighting_pressure WHERE observed_time BETWEEN #{startTime} AND #{endTime} GROUP BY ROUND(gprs_signal) ORDER BY signalLevel