explosion                     location            date yield (approximate)  altitude (km) nation of origin
0    hardtack teak  johnston island ( pacific )  1958 - 08 - 01        3.8 megatons           76.8    united states
1  hardtack orange  johnston island ( pacific )  1958 - 08 - 12        3.8 megatons           43.0    united states
2          argus i               south atlantic  1958 - 08 - 27      1 - 2 kilotons          200.0    united states
3         argus ii               south atlantic  1958 - 08 - 30      1 - 2 kilotons          256.0    united states
4        argus iii               south atlantic  1958 - 09 - 06      1 - 2 kilotons          539.0    united states
5   starfish prime  johnston island ( pacific )  1962 - 07 - 09        1.4 megatons          400.0    united states
6            k - 3                   kazakhstan  1962 - 10 - 22       300 s kiloton          290.0             ussr
7            k - 4                   kazakhstan  1962 - 10 - 28       300 s kiloton          150.0             ussr

Table as JSON:
{"explosion":{"0":"hardtack teak","1":"hardtack orange","2":"argus i","3":"argus ii","4":"argus iii","5":"starfish prime","6":"k - 3","7":"k - 4"},"location":{"0":"johnston island ( pacific )","1":"johnston island ( pacific )","2":"south atlantic","3":"south atlantic","4":"south atlantic","5":"johnston island ( pacific )","6":"kazakhstan","7":"kazakhstan"},"date":{"0":"1958 - 08 - 01","1":"1958 - 08 - 12","2":"1958 - 08 - 27","3":"1958 - 08 - 30","4":"1958 - 09 - 06","5":"1962 - 07 - 09","6":"1962 - 10 - 22","7":"1962 - 10 - 28"},"yield (approximate)":{"0":"3.8 megatons","1":"3.8 megatons","2":"1 - 2 kilotons","3":"1 - 2 kilotons","4":"1 - 2 kilotons","5":"1.4 megatons","6":"300 s kiloton","7":"300 s kiloton"},"altitude (km)":{"0":76.8,"1":43.0,"2":200.0,"3":256.0,"4":539.0,"5":400.0,"6":290.0,"7":150.0},"nation of origin":{"0":"united states","1":"united states","2":"united states","3":"united states","4":"united states","5":"united states","6":"ussr","7":"ussr"}}