ICOADS 2-degree Enhanced
X axis: whole world in 180 2.00° steps,
first point at 1.00° E, last point at 359.00° E
Y axis: regular grid with 90 -2.00° steps,
first point at 89.00° N, last point at 89.00° S
Monthly data available from Jan1800 to Jul2019 (2635 months)
Variable slp (Sea Level Pressure Monthly Number of Observations at Surface) in observations Full metadata.