Can we have just ONE useful SURVIVAL THREAD?

The Sun strength is a variable. time of day and sun slant angle is a variable. Atmospheric transmissivity is a variable. The cleanliness and clarity and magnification power of your lens is a variable. wind speed, humidity, tinder dryness, tinder content, ambient temperature, etc. are all variables.

To give a meaningful answer, you would need about $100,000 worth of equipment to measure all that crap, both the create the table and to use the table.

Or you could just carry a lighter and a ferro rod. :)
(They even work at night, or in the rain, when you are freezing to death. :)

I moved off grid last year. Just get what you think you'd want to go camping in the backwoods in December. A small camp stove, portable wood stove, good sleeping bag etc. Plan to make urself comfortable for at least the first 10 days, so you can gather Intel and make logical decisions on ur next move. After u acquire that security, get what you think you might need to camp in the backwoods in July. Cover from sun, sunscreen, bug repellent, cheap solar shower, water filter, fishing tackle and so on. Best purchase I made was a small solar generator and 100w solar panel. All my flashlights, lanterns, shower are rechargeable. I rarely use my full solar set up. Just remain calm, think decisions through and don't over prep. Some of these people have a years worth of crap. You WILL eventually run out or be murdered for ur supplies. Keep it simple and mobile. People who hole up for six months won't know how to get by once their supplies run out. Everyone else will be established survivalists. Idk, just my thoughts