Jan -9.9   -18.4  -14.2 -999 14 M1 O1a 100
Feb -6     -15    -10.5 -999 14 M1 O1a 100
Mar  0.3   -9.1   -4.4  -999 14 M1 O1a 100 
Apr  9.3   -1.3    4    -999 14 M1 O1a 80 
May  15.7   4.1    10   -999 14 M2 O1a 60 
Jun  19.2   8.2    13.8 -999 14 M2 O1a 40 
Jul  21.2   10.2   15.7 -999 12 M2 O1a 80 
Aug  20.2   8.9    14.6 -999 12 M2 O1a 60 
Sep  15.1   4.6    9.9  -999 13 M2 O1a 60 
Oct  8.2   -0.4    3.9  -999 15 M1 O1a 60 
Nov -2.9   -10.4  -6.7  -999 14 M1 O1a 100
Dec -8     -16.2  -12.1 -999 14 M1 O1a 100