Good features, needs more info
Update (4/5/17): developer responded via App Store, thanks! But still have questions: how is WBGT estimated, and what discomfort index is used? Thank you.
Update: 4/15/17. Thank you to the developer for the details on the wbgt estimation. The globe temperature is the hardest to accurately estimate, but thank you for listing your equation. Also thanks for listing the discomfort index equation in your app. I appreciate your support and use your app. Excellent post script- I give 5 stars now.
Response from developer
(4/11/17) Dear Tx9753. Thank you for your new question. I am sorry for the copy and paste from Description of the AppStore, this is the answer to your question. That’s because of my Japanese people,my not good at English. There may have been a strange part in sentence expression, apologize about this matter. At the risk of repetition, thank you for your comment. From the developers of this app. ★★ Supplementary explanation about the WBGT(Estimated value) and the Discomfort index. ★★ The calculation formula of the outdoor WBGT is "WBGT = 0.7 Tnw + 0.1 Td + 0.2 Tg", but since there is no entry item Globe thermometer temperature (Tg) in this application, estimation the Globe thermometer temperature(Tg) by Dry-bulb temperature (Td). - Calculation formula: "Tg = 1.45 Td - 27.162 [Temperature unit: ℉]” There is a very strong correlation between Globe thermometer temperature (Tg) and Dry-bulb temperature (Td). [Statistical information on this correlation : The number of samples is 17376 and the coefficient of determination(R^2) when statistics are taken is 0.919] For Natural wet-bulb temperature (Tnw), Convert the Wet-bulb temperature(Tw) obtained by measurement by Assmann psychrometer to the Wet-bulb temperature(Tw) measured in natural state, a use it as Natural wet-bulb temperature (Tnw). The natural state here means that the wind speed at the time of measurement is 5 meters per second(16.4 feet per second) or less. The algorithm of this conversion is very special, so we omit the explanation. "Discomfort Index" is "Temperature-humidity index". The calculation formula is "Discomfort Index[DI] = 0.4 × (Td + Tw) +15 [Temperature unit: ℉]". (4/5/17) Dear Tx9753. Thank you for your comment. You about the matter pointed out is wrote the answer on the Description section in the AppStore.Could you please view it if you don’t mind? I am sorry to you, but there is no plan for will change to paid application. Because of my Japanese people,my not good at English. There may have been a strange part in sentence expression, apologize about this matter. At the risk of repetition, thank you for your comment. From the developers of this app.
