diff --git a/__init__.py b/__init__.py
index 6fac78a..797167b 100644
--- a/__init__.py
+++ b/__init__.py
@@ -9,18 +9,14 @@ import time
 from helpers import continues_statistic
 from rpi_envsens.dht import dht_22
 from rpi_envsens.bmp import bmp_180
+import helpers
 
 logger = logging.getLogger('APP')
 
 
 class my_base_protocol_tcp(socket_protocol.pure_json_protocol):
-    # EXECUTE_REQUESTs
-    CURRENT_ENVDATA = 0
-    TODAYS_STATISTIC_ENVDATA = 1
-    YESTERDAYS_STATISTIC_ENVDATA = 2
-    BUFFERED_TEMPERATURE = 3
-    BUFFERED_HUMIDITY = 4
-    BUFFERED_PRESSURE = 5
+    ENVDATA_STATISTIC_DHT = 0
+    ENVDATA_STATISTIC_BMP = 1
 
 
 class my_server_protocol_tcp(my_base_protocol_tcp):
@@ -28,57 +24,16 @@ class my_server_protocol_tcp(my_base_protocol_tcp):
         socket_protocol.pure_json_protocol.__init__(self, comm_instance, secret)
         self.dht_data = dht_data
         self.bmp_data = bmp_data
-        self.register_callback(self.SID_READ_REQUEST, None, self.read_request)
+        self.register_callback(self.SID_READ_REQUEST, self.ENVDATA_STATISTIC_BMP, self.envdata_statistic_request)
+        self.register_callback(self.SID_READ_REQUEST, self.ENVDATA_STATISTIC_DHT, self.envdata_statistic_request)
 
-    def data_age_okay(self, dd, bd):
-        MAX_AGE = 60.
-        tm = time.time()
-        return dd[dht_22.KEY_TIME] + MAX_AGE >= tm and bd[bmp_180.KEY_TIME] + MAX_AGE >= tm 
-
-    def read_request(self, msg):
+    def envdata_statistic_request(self, msg):
         did = msg.get_data_id()
-        if did == self.CURRENT_ENVDATA:
-            dd = self.dht_data.current
-            bd = self.bmp_data.current
-            if dd is not None and bd is not None:
-                if self.data_age_okay(bd, dd):
-                    rv = {}
-                    rv[dht_22.KEY_TEMPERATURE] = dd[dht_22.KEY_TEMPERATURE]
-                    rv[dht_22.KEY_HUMIDITY] = dd[dht_22.KEY_HUMIDITY]
-                    rv[bmp_180.KEY_PRESSURE] = bd[bmp_180.KEY_PRESSURE]
-                    return self.STATUS_OKAY, rv
-            return self.STATUS_OPERATION_NOT_PERMITTED, None
-        elif did in [self.TODAYS_STATISTIC_ENVDATA, self.YESTERDAYS_STATISTIC_ENVDATA]:
-            if did == self.TODAYS_STATISTIC_ENVDATA:
-                dd = self.dht_data.todays_statistic
-                bd = self.bmp_data.todays_statistic
-            else:
-                dd = self.dht_data.yesterdays_statistic
-                bd = self.bmp_data.yesterdays_statistic
-            if dd is None or bd is None:
-                return self.STATUS_OPERATION_NOT_PERMITTED, None
-            else:
-                rv = {}
-                rv[dht_22.KEY_TEMPERATURE] = dd[dht_22.KEY_TEMPERATURE]
-                rv[dht_22.KEY_HUMIDITY] = dd[dht_22.KEY_HUMIDITY]
-                rv[bmp_180.KEY_PRESSURE] = bd[bmp_180.KEY_PRESSURE]
-                return self.STATUS_OKAY, rv
-        elif did in [self.BUFFERED_HUMIDITY, self.BUFFERED_PRESSURE, self.BUFFERED_TEMPERATURE]:
-            if did == self.BUFFERED_HUMIDITY:
-                db = self.dht_data.databuffer
-                key = dht_22.KEY_HUMIDITY
-            elif did == self.BUFFERED_PRESSURE:
-                db = self.bmp_data.databuffer
-                key = bmp_180.KEY_PRESSURE
-            else:
-                db = self.dht_data.databuffer
-                key = dht_22.KEY_TEMPERATURE
-            rv = []
-            for entry in db:
-                rv.append((entry[dht_22.KEY_TIME], entry[key]))
-            return self.STATUS_OKAY, rv
-        else:
-            return self.STATUS_SERVICE_OR_DATA_UNKNOWN, None
+        if did == self.ENVDATA_STATISTIC_BMP:
+            return self.STATUS_OKAY, dict(self.bmp_data.pop())
+        elif did == self.ENVDATA_STATISTIC_DHT:
+            return self.STATUS_OKAY, dict(self.dht_data.pop())
+        return self.STATUS_SERVICE_OR_DATA_UNKNOWN, None
 
 
 class my_client_protocol_tcp(my_base_protocol_tcp):
@@ -99,23 +54,12 @@ class my_client_protocol_tcp(my_base_protocol_tcp):
         if msg.get_status() == self.STATUS_OKAY:
             did = msg.get_data_id()
             data = msg.get_data()
-            if did == self.CURRENT_ENVDATA:
-                print("Temperature: %6.1f °C" % data[dht_22.KEY_TEMPERATURE])
-                print("Humidity:    %6.1f %%" % data[dht_22.KEY_HUMIDITY])
-                print("Pressure:    %6.1f mbar" % data[bmp_180.KEY_PRESSURE])
-            elif did in [self.TODAYS_STATISTIC_ENVDATA, self.YESTERDAYS_STATISTIC_ENVDATA]:
-                print(continues_statistic(**data))
-            elif did in [self.BUFFERED_HUMIDITY, self.BUFFERED_PRESSURE, self.BUFFERED_TEMPERATURE]:
-                if did == self.BUFFERED_HUMIDITY:
-                    print("Humidity:")
-                elif did == self.BUFFERED_PRESSURE:
-                    print("Pressure:")
-                else:
-                    print("Temperature:")
-                print(data)
+            if did in [self.ENVDATA_STATISTIC_BMP, self.ENVDATA_STATISTIC_DHT]:
+                print(helpers.continues_statistic_multivalue(**data))
             else:
                 return self.STATUS_SERVICE_OR_DATA_UNKNOWN, None
             return self.STATUS_OKAY, None
         else:
             print('No data received!')
             return self.STATUS_SERVICE_OR_DATA_UNKNOWN, None
+