12 13 14 IS 16 17 18 19 20 gl gg 23 34 25 36 27 28 29 5(3"l 2 34 5 6 6 9 10 II 12 13 14 IS ISTT 



99 IT 



97FT 



96 FT 



97F 



100 FT 

 99F 

 9rfF 

 97F 



FORE PERIOD PRESERVATIVE PERIOD AFTER>RIOD 



FIG. 1. Daily and average temperature record for Series IX, Nos. 1 to 6, and summary. 

 [Cir. 42] 



