原因,0時〜,2時〜,4時〜,6時〜,8時〜,10時〜,12時〜,14時〜,16時〜,18時〜,20時〜,22時〜,不明,NO
たばこ,0,1,1,1,2,4,5,3,3,3,1,1,1,1
配線器具,0,1,0,0,1,2,1,0,3,2,1,1,0,2
電灯等の配線,2,0,0,0,0,1,2,2,1,2,0,0,1,3
たき火,0,0,0,0,2,4,0,0,0,0,1,1,1,4
電気機器,1,0,0,0,0,1,1,2,0,2,1,0,0,5
こんろ,0,0,0,0,0,0,0,0,1,4,1,0,0,6
（天ぷら）,0,0,0,0,0,0,0,0,1,0,1,0,0,7
火遊び,0,0,0,0,0,0,0,1,0,2,1,0,0,8
ストーブ,0,0,1,0,0,1,1,0,0,0,0,0,0,9
"マッチ・ ライター",0,0,0,0,0,0,0,0,2,0,0,0,0,10
放火,0,1,1,0,0,1,0,2,1,1,1,1,1,11
放火の疑い,0,0,0,0,0,0,1,1,0,0,0,0,0,12
その他,3,3,1,2,6,11,8,10,8,4,2,2,1,13
不明,1,0,2,1,2,1,2,2,0,1,3,1,1,14