Yeah. I see it. But I’m missing where you see 50% different.

Using the weather.gov formula assuming T is dewpoint:

```
weather.gov saturated vapor pressure 0 (mb) = 6.11
weather.gov saturated vapor pressure 10 (mb) = 12.2833431422
weather.gov saturated vapor pressure 15 (mb) = 17.0584258108
weather.gov saturated vapor pressure 20 (mb) = 23.3893568431
weather.gov saturated vapor pressure 30 (mb) = 42.4416297132
weather.gov saturated vapor pressure 40 (mb) = 73.773775674
```

Using the WF formula on the derived formulas page, assuming 100% RH:

```
weatherflow 100% RH vapor pressure 0 (mb) = 6.112
weatherflow 100% RH vapor pressure 10 (mb) = 12.2716959939
weatherflow 100% RH vapor pressure 15 (mb) = 17.0404945379
weatherflow 100% RH vapor pressure 20 (mb) = 23.3694712341
weatherflow 100% RH vapor pressure 30 (mb) = 42.4557544286
weatherflow 100% RH vapor pressure 40 (mb) = 73.9490058102
```

They’re the same. Where is the 50% difference ? I’m really not seeing it.