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Table 2 The dose of natural UV radiation the investigated sunscreens received

From: Photostability of commercial sunscreens upon sun exposure and irradiation by ultraviolet lamps

Sunscreen Exposure time (min) UVA radiation (kJ/m2) Erythemal effective radiation (J/m2) SED
1 30 54 **  
  90 180 **  
  120 260 **  
2 30 54 100 1
  90 180 410 4.1
  120 260 610 6.1
3 30 65 140 1.4
  90 210 530 5.3
  120 280 730 7.3
4 30 65 **  
  90 210 **  
  120 280 **  
5 30 ** **  
  90 ** **  
  120 210 **  
6 30 47 140 1.4
  90 140 300 3.0
  120 210 370 3.7
7 30 65 150 1.5
  90 130 320 3.2
  240* 570 1500 15
  1. Data from the Swedish Metrological and Hydrological Institute (SMHI)
  2. * The exposure time for Sunscreen 7 it was 30 min, 90 min and 240 min due to technical obstacles
  3. ** Data not available due to technical obstacles at SMHI.