Fig. 3From: An assessment of radiation doses at an educational institution 57.8 km away from the Fukushima Daiichi nuclear power plant 1 month after the nuclear accidentComparison of mean radiation dose rates and count rates measured at 1 cm above the ground surface, by surface property. Means ± standard deviation are indicated; *p < 0.01 compared with grass; # p < 0.01 compared with soil; $ p < 0.01 compared with artificial turf by one-way analysis of variance following Tukey–Kramer post hoc testBack to article page