What type of array is this ?Array - 3D

Question

var data = [

[//iPhone

{axis:"Battery Life",value:0.22},

{axis:"Brand",value:0.28},

{axis:"Contract Cost",value:0.29},

{axis:"Design And Quality",value:0.17},

{axis:"Have Internet Connectivity",value:0.22},

{axis:"Large Screen",value:0.02},

{axis:"Price Of Device",value:0.21},

{axis:"To Be A Smartphone",value:0.50}

],

[//Samsung

{axis:"Battery Life",value:0.27},

{axis:"Brand",value:0.16},

{axis:"Contract Cost",value:0.35},

{axis:"Design And Quality",value:0.13},

{axis:"Have Internet Connectivity",value:0.20},

{axis:"Large Screen",value:0.13},

{axis:"Price Of Device",value:0.35},

{axis:"To Be A Smartphone",value:0.38}

],

[//Nokia Smartphone

{axis:"Battery Life",value:0.26},

{axis:"Brand",value:0.10},

{axis:"Contract Cost",value:0.30},

{axis:"Design And Quality",value:0.14},

{axis:"Have Internet Connectivity",value:0.22},

{axis:"Large Screen",value:0.04},

{axis:"Price Of Device",value:0.41},

{axis:"To Be A Smartphone",value:0.30}

]

];

 What type of array is this?

How can I create this type array  out of list in C#