Interesting blip in the "Conversion Rates by page load time" graph. Wonder what the reason is for the conversion rate for 0-1 seconds being markedly lower than 1-2, 2-3, and 3-4?

Also, that graph really irks me. Not enough contrast, poor layout, and confusing axis labels which depend upon color. Also, is the 0.025 on the y-axis a percentage or a decimal (I think it means 2.5% conversion rate?)