2.5.2

Fix sunburn factors

assets/js/utils.js

@@ -131,16 +131,19 @@ export function uvSplit(uv, elevDeg) {
 // SUNBURN TIME - minutes to MED for the chosen Fitzpatrick skin type.
 // -------------------------------------------------------------------
 // Standard erythemal model: time_min - base_minutes[type] / UV_index.
-// Numbers are the well-known "unprotected, midday, no sunscreen"
-// reference times at UV = 1. Returns Infinity when UV is 0 (night).
+// base = minutes to 1 MED at UV = 1, unprotected, no sunscreen.
+// Calibrated to the erythemal-dose science (UVI = 40 x E_er W/m-,
+// MED_II ~ 250 J/m-), giving ~150/UV min for fair skin rather than
+// the more alarmist consumer "10 min at UV 10" rule of thumb.
+// Returns Infinity when UV is 0 (night).
 // -------------------------------------------------------------------
 export const SKIN_TYPES = {
-  I:   { name: 'I · Very fair',   base: 67 },
-  II:  { name: 'II · Fair',       base: 100 },
-  III: { name: 'III · Light',     base: 200 },
-  IV:  { name: 'IV · Mid',        base: 300 },
-  V:   { name: 'V · Dark',        base: 400 },
-  VI:  { name: 'VI · Very dark',  base: 500 },
+  I:   { name: 'I · Very fair',   base: 100 },
+  II:  { name: 'II · Fair',       base: 150 },
+  III: { name: 'III · Light',     base: 300 },
+  IV:  { name: 'IV · Mid',        base: 450 },
+  V:   { name: 'V · Dark',        base: 600 },
+  VI:  { name: 'VI · Very dark',  base: 750 },
 };
 export function sunburnMinutes(uv, skinType = 'II') {
   if (!uv || uv <= 0) return Infinity;