lon
lat
alt
dummy
verna_30d
verna_jan_feb
verna_mar_apr
pfrost
pcp_aut
pcp_win
pcp_mar_apr
pcp_may_jun
frost_jan_feb
frost_apr_may
tamp_win
tamp_spr
et0_spr
bal_aut
bal_win
bal_jun
bal_mar_apr_may