Improved McNish & Lincoln method prediction

Improved 12-month forecasts of the monthly sunspot number (McNish and Lincoln method):
Time range:
from -5 months before last elapsed month (provisional values) to +12 months after.

Data description:
Improved 12-month ahead predictions obtained by applying an adaptative Kalman filter to the primary McNish and Lincoln (ML) prodictions from WDC-SILSO. This technique improves the approximation of the smoothed monthly sunspot number over the last 6 months, i.e. the interval between the last available smoothed value of the sunspot number and the current month of the prediction.

(Ref.: T. Podladchikova, R. Van der Linden, 2011: "A Kalman Filter Technique for Improving Medium-Term Predictions of the Sunspot Number". Solar Physics. DOI: 10.1007/s11207-011-9899-y)

Filename: KFprediML.txt
Format: plain ASCII text

Column 1: Year
Column 2: Month
Column 3: Date in fraction of year (mid-month, ~ day 15)
Column 4: Forecasted monthly mean value
Column 5: Uncertainty on the forcasted monthly value (+/- 1 standard deviation)

Line format [character position]:
- [1-4] Year
- [6-7] Month
- [10-17] Decimal date
- [21-25] Forecasted monthly value
- [27-31] Uncertainty (+/-)