so no stations to give the readings. hmmmm how does that coloring book page give you a differential in temperature of 1.0 degree temps?
Do you mean weather stations? ... there's no agricultural interests in the middle of the ocean ... why would there be weather stations? ... the website should explain how all this data is collected, it's completely up to you whether to accept the data or not ... charter a boat and go out there with a cheap-o Walmart thermometer, see how accurate the numbers are, I don't think NOAA uses much better ... weather forecasts are actually pretty good out two days, reasonable good at three days ... and what I posted is useful for this purpose ... it's great information when used for the what it was designed to do ...
Do you want the 100 year average for climate studies? ... you'll have to wait 100 years for that ... or maybe 75, I don't know how long these satellites have been in orbit ...
(Big hurricanes will leave a trace in that image, a line of blue where the hurricane passed over and sucked all the energy out of the water, making it cold ... pretty cool ...)