Jan -5.5   -13.6  -9.6  -999 10 M1 O1a 100
Feb -0.8   -10    -5.4  -999 11 M1 O1a 100
Mar  5     -5.5   -0.3  -999 10 M1 O1a 100 
Apr  11.4  -1.1    5.2  -999 10 M1 O1a 80 
May  16.5   3.2    9.9  -999 9 M2 O1a 60 
Jun  19.5   7      13.3 -999 9 M2 O1a 40 
Jul  22.1   8.8    15.5 -999 8 M2 O1a 80 
Aug  21.7   7.9    14.8 -999 7 M2 O1a 60 
Sep  16.4   3.8    10.1 -999 8 M2 O1a 60 
Oct  9.5   -0.4    4.6  -999 10 M1 O1a 60 
Nov  0.6   -6.3   -2.9  -999 11 M1 O1a 100
Dec -4     -11.7  -7.8  -999 11 M1 O1a 100