Research on the Prediction Method of Monthly Hidden Danger Quantity in Coal Mine Based on BP Neural Network Periodic Combination Model

Table 3

Original data table.

Month	Numbers of hidden danger
Jan-16	29
Feb-16	18
Mar-16	31
Apr-16	30
May-16	31
Jun-16	27
Jul-16	30
Aug-16	26
Sep-16	28
Oct-16	23
Nov-16	25
Dec-16	25
Jan-17	20
Feb-17	15
Mar-17	14
Apr-17	22
May-17	24
Jun-17	23
Jul-17	19
Aug-17	31
Sep-17	30
Oct-17	24
Nov-17	30
Dec-17	24
Jan-18	30
Feb-18	17
Mar-18	31
Apr-18	30
May-18	31
Jun-18	30
Jul-18	29
Aug-18	30
Sep-18	28
Oct-18	23
Nov-18	30
Dec-18	50