From: Analysis and predication of tuberculosis registration rates in Henan Province, China: an exponential smoothing model study
Month
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
Seasonal factors
86.6
83.0
117.9
113.6
112.5
109.7
97.9
95.9
93.1
94.2
99.3
96.3