You are now a sqlite data analyst, and you are given a database schema as follows:

    【Schema】
    【DB_ID】 debit_card_specializing
【Schema】
# Table: transactions_1k
[
(TransactionID:INTEGER, Primary Key, Examples: [1, 2, 3]),
(Date:DATE, Examples: [2012-08-24]),
(Time:TEXT, Examples: [09:41:00, 10:03:00, 13:53:00]),
(CustomerID:INTEGER, Examples: [31543, 46707, 7654]),
(CardID:INTEGER, Examples: [486621, 550134, 684220]),
(GasStationID:INTEGER, Examples: [3704, 656, 741]),
(ProductID:INTEGER, Examples: [2, 23, 5]),
(Amount:INTEGER, Examples: [28, 18, 1]),
(Price:REAL, Examples: [672.64, 430.72, 121.99])
]
# Table: yearmonth
[
(CustomerID:INTEGER, Primary Key, Examples: [39, 63, 172]),
(Date:TEXT, Primary Key, Examples: [201112, 201201, 201202]),
(Consumption:REAL, Examples: [528.3, 1598.28, 1931.36])
]
# Table: customers
[
(CustomerID:INTEGER, Primary Key, Examples: [3, 5, 6]),
(Segment:TEXT, Examples: [SME, LAM, KAM]),
(Currency:TEXT, Examples: [EUR, CZK])
]
# Table: products
[
(ProductID:INTEGER, Primary Key, Examples: [1, 2, 3]),
(Description:TEXT, Examples: [Rucní zadání, Nafta, Special])
]
# Table: gasstations
[
(GasStationID:INTEGER, Primary Key, Examples: [44, 45, 46]),
(ChainID:INTEGER, Examples: [13, 6, 23]),
(Country:TEXT, Examples: [CZE, SVK]),
(Segment:TEXT, Examples: [Value for money, Premium, Other])
]
【Foreign keys】
yearmonth.CustomerID=customers.CustomerID

    【Question】
    What is the difference in the annual average consumption of the customers with the least amount of consumption paid in CZK for 2013 between SME and LAM, LAM and KAM, and KAM and SME? annual average consumption of customer with the lowest consumption in each segment = total consumption per year / the number of customer with lowest consumption in each segment; Difference in annual average = SME's annual average - LAM's annual average; Difference in annual average = LAM's annual average - KAM's annual average; Year 2013 can be presented as Between 201301 And 201312; The first 4 strings of the Date values in the yearmonth table can represent year.

    【Evidence】
    annual average consumption of customer with the lowest consumption in each segment = total consumption per year / the number of customer with lowest consumption in each segment; Difference in annual average = SME's annual average - LAM's annual average; Difference in annual average = LAM's annual average - KAM's annual average; Year 2013 can be presented as Between 201301 And 201312; The first 4 strings of the Date values in the yearmonth table can represent year.

    Please read and understand the database schema carefully, and generate an executable SQL based on the user's question and evidence. 

SQL: SELECT CAST(SUM(IIF(T1.Segment = 'SME', T2.Consumption, 0)) AS REAL) / COUNT(T1.CustomerID) - CAST(SUM(IIF(T1.Segment = 'LAM', T2.Consumption, 0)) AS REAL) / COUNT(T1.CustomerID) , CAST(SUM(IIF(T1.Segment = 'LAM', T2.Consumption, 0)) AS REAL) / COUNT(T1.CustomerID) - CAST(SUM(IIF(T1.Segment = 'KAM', T2.Consumption, 0)) AS REAL) / COUNT(T1.CustomerID) , CAST(SUM(IIF(T1.Segment = 'KAM', T2.Consumption, 0)) AS REAL) / COUNT(T1.CustomerID) - CAST(SUM(IIF(T1.Segment = 'SME', T2.Consumption, 0)) AS REAL) / COUNT(T1.CustomerID) FROM customers AS T1 INNER JOIN yearmonth AS T2 ON T1.CustomerID = T2.CustomerID WHERE T1.Currency = 'CZK' AND T2.Consumption = ( SELECT MIN(Consumption) FROM yearmonth ) AND T2.Date BETWEEN 201301 AND 201312