ค่า Platform Version , API Level , VERSION_CODE ของ android มีความหมายยังไง

        
Platform Version                                     API Level             VERSION_CODE
Android 4.4                                     19    KITKAT
Android 4.3                                     18    JELLY_BEAN_MR2
Android 4.2, 4.2.2                       17    JELLY_BEAN_MR1
Android 4.1, 4.1.1                       16    JELLY_BEAN
Android 4.0.3, 4.0.4                       15    ICE_CREAM_SANDWICH_MR1
Android 4.0, 4.0.1, 4.0.2              14    ICE_CREAM_SANDWICH
Android 3.2                                13    HONEYCOMB_MR2
Android 3.1.x    12    HONEYCOMB_MR1
Android 3.0.x    11    HONEYCOMB
Android 2.3.4    10    GINGERBREAD_MR1
Android 2.3.3        
Android 2.3.2    9    GINGERBREAD
Android 2.3.1        
Android 2.3        
Android 2.2.x    8    FROYO
Android 2.1.x    7    ECLAIR_MR1
Android 2.0.1    6    ECLAIR_0_1
Android 2.0    5    ECLAIR
Android 1.6    4    DONUT
Android 1.5    3    CUPCAKE
Android 1.1    2    BASE_1_1
Android 1.0    1    BASE