Put a network of thermometers together, produce a monthly high and low averaged between stations and the same effect I mentioned will apply except more so: most unprecedented and subsequently unparalleled extremes will be found in the earlier history of the network.
Put a network of thermometers together, produce a monthly high and low averaged between stations and the same effect I mentioned will apply except more so: most unprecedented and subsequently unparalleled extremes will be found in the earlier history of the network.