diff --git a/__init__.py b/__init__.py
index 6b3c966..6fac78a 100644
--- a/__init__.py
+++ b/__init__.py
@@ -6,17 +6,21 @@ import logging
 import socket_protocol
 import time
 
+from helpers import continues_statistic
 from rpi_envsens.dht import dht_22
 from rpi_envsens.bmp import bmp_180
 
 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
 
 
 class my_server_protocol_tcp(my_base_protocol_tcp):
@@ -24,24 +28,57 @@ 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, self.CURRENT_ENVDATA, self.current_envdata)
+        self.register_callback(self.SID_READ_REQUEST, None, self.read_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 current_envdata(self, msg):
-        dd = self.dht_data.current
-        bd = self.bmp_data.current
-        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]
+    def read_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_OPERATION_NOT_PERMITTED, None
+            return self.STATUS_SERVICE_OR_DATA_UNKNOWN, None
 
 
 class my_client_protocol_tcp(my_base_protocol_tcp):
@@ -49,7 +86,7 @@ class my_client_protocol_tcp(my_base_protocol_tcp):
 
     def __init__(self, comm_instance, secret=None):
         socket_protocol.pure_json_protocol.__init__(self, comm_instance, secret)
-        self.register_callback(self.SID_READ_RESPONSE, self.CURRENT_ENVDATA, self.read_current_envdata)
+        self.register_callback(self.SID_READ_RESPONSE, None, self.print_read_response)
 
     def __authentificate_process_feedback__(self, msg):
         if msg.get_data() is True:
@@ -58,14 +95,27 @@ class my_client_protocol_tcp(my_base_protocol_tcp):
             print("AUTHENTIFICATION ERROR")
         return my_base_protocol_tcp.__authentificate_process_feedback__(self, msg)
 
-    def read_current_envdata(self, msg):
+    def print_read_response(self, msg):
         if msg.get_status() == self.STATUS_OKAY:
-            env_data = msg.get_data()
-            print("Temperature: %6.1f °C" % env_data[dht_22.KEY_TEMPERATURE])
-            print("Humidity:    %6.1f %%" % env_data[dht_22.KEY_HUMIDITY])
-            print("Pressure:    %6.1f mbar" % env_data[bmp_180.KEY_PRESSURE])
+            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)
+            else:
+                return self.STATUS_SERVICE_OR_DATA_UNKNOWN, None
             return self.STATUS_OKAY, None
         else:
-            print('No environmental data received!')
+            print('No data received!')
             return self.STATUS_SERVICE_OR_DATA_UNKNOWN, None
-