Spatial variations Regression analysis 6 spatial variation 6 Altitude 4 Climatology 4 Great Britain 4 Modelling 4 Precipitation 4 Precipitation (meteorology) 4 Rain 4 Regression 4 Sea level 4 United Kingdom 4 altitude 4 rainfall 4 raingauge 4 regression analysis 4 Adaptive optics 2 Average waiting times 2 Calibration 2 Classical methods 2 Correlation lengths 2 Distribution functions 2 Event distribution functions 2 Experimental set up 2 Fluid dynamics 2 Flux tubes 2 Holographic display 2 Holographic displays 2 Interferometric measurement 2