Completed the following sentence: Other man-made sources are small contributors to the total. Atmospheric nuclear weapons tests released an estimated 111<unk>185 PBq. 1979 accident at the
<unk> <unk> <unk> <unk> <unk> <unk> Chernobyl accident released about 35 PBq, and the Fukushima Daiichi accident released an estimated 44<unk>84 PBq.