g | Gaussian |
t | Triangular |
T | Triangular (truncated) |
.... |
d | Deseasonalized |
m | Mean seasonal cycle |
r | Running yearly average - removes seasonal cycle |
a | Anomaly around running yearly average |
A | Seasonal cycle amplitude |
x | (no special treatment) |
a | Anomalies around long-term mean (= subtract average) |
l | Long-term mean (constant) |
z | Subtract filtered value at beginning of restricted period |
Z | Subtract filtered value at beginning of restricted period, and set to zero before restricted period |
x | (no special treatment) |
a | Anomalies around linear trend (= detrend) |
s | Special: apply filter to detrended part only (= detrend, filter, and re-add trend) |
z | Subtract value of linear fit at beginning of restricted period |
x | (no special treatment) |