Below are the pixel values for all of the grid sizes for each breakpoint:
Breakpoint Width: 320 pixels
Inner Grid Size: 288 pixels
Column Size: 16 pixels
Gap Between Columns: 8 pixels
Outside Gutter Size: 16 pixels
Breakpoint Width: 375 pixels
Inner Grid Size: 343 pixels
Column Size: 21 pixels
Gap Between Columns: 8 pixels
Outside Gutter Size: 16 pixels
Breakpoint Width: 414 pixels
Inner Grid Size: 382 pixels
Column Size: 24 pixels
Gap Between Columns: 8 pixels
Outside Gutter Size: 16 pixels
Breakpoint Width: 768 pixels
Inner Grid Size: 720 pixels
Column Size: 45 pixels
Gap Between Columns: 16 pixels
Outside Gutter Size: 24 pixels
Breakpoint Width: 1024 pixels
Inner Grid Size: 944 pixels
Column Size: 64 pixels
Gap Between Columns: 16 pixels
Outside Gutter Size: 40 pixels
Breakpoint Width: 1192 pixels
Inner Grid Size: 1112 pixels
Column Size: 78 pixels
Gap Between Columns: 16 pixels
Outside Gutter Size: 40 pixels