Don't specify a pre-bomb dataset for post-bomb sets that start before 1950 (ie Brazil and Kure Atoll).
http://dx.doi.org/10.1017/RDC.2020.41
http://dx.doi.org/10.1017/RDC.2020.59
A concatenation of Levin's Vermunt and Schauinsland data sets. Representative of the European atmosphere (except for highly industrial areas). Published by Levin and Kromer in The Tropospheric 14CO2 Level in Mid-Latitudes of the Northern Hemisphere (1959-2003), Radiocarbon 46(3), pp 1261-1272. Data points are approximately bi-weekly. calrange: [1950:2019.6] f14crange:[.974:1.992]Hammer, Samuel; Levin, Ingeborg, 2017, "Monthly mean atmospheric D14CO2 at Jungfraujoch and Schauinsland from 1986 to 2016",
http://dx.doi.org/10.11588/data/10100
heiDATA: Heidelberg Research Data Repository [Distributor] V2 [Version]Uncertainties for the monthly averages were taken from the annual averages of individual measurement uncertainties.
I have also added 9 NHZ1 points between 1950 and 1959 to smooth the transition with IntCal
Hammer, Samuel; Levin, Ingeborg, 2017, "Monthly mean atmospheric D14CO2 at Jungfraujoch and Schauinsland from 1986 to 2016",
http://dx.doi.org/10.11588/data/10100
heiDATA: Heidelberg Research Data Repository [Distributor] V2 [Version]The above dataset averaged between mid-May and mid-August
The dataset calrange: [1950:2016.6] f14crange:[.974:1.949]
A compilation of northern and southern hemisphere datasets by Hua et al published in "ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010", Radiocarbon, 55: Nr 4, 2013.NH_zone1 is bounded in the south by latitude ~40°N. Data points are approximately monthly. calrange: [1950:2009.6] f14crange:[.974:1.984]
A compilation of northern and southern hemisphere datasets by Hua et al published in "ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010", Radiocarbon, 55: Nr 2, 2013.NH_zone2 is bounded in the north by latitude ~40°N and in the south by the mean summer intertropical convergence zone. Data points are approximately monthly.
The dataset calrange: [1950:2009.6] f14crange:[.977:1.939]
A compilation of northern and southern hemisphere datasets by Hua et al published in "ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010", Radiocarbon, 55: Nr 2, 2013.NH_zone3 is bounded in the north by the mean summer intertropical convergence zone and in the south by the equator. Data points are approximately monthly.
The dataset calrange: [1950:2009.6] f14crange:[.973:1.736]
A compilation of northern and southern hemisphere datasets by Hua et al published in "ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010", Radiocarbon, 55: Nr 2, 2013.Southern Hemisphere Zones 1 and 2 are bounded in the north by the mean intertropical convergence zone. Data points are approximately monthly.
The dataset calrange: [1950:2011.2] f14crange:[.971:1.675]
A compilation of northern and southern hemisphere datasets by Hua et al published in "ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950-2010", Radiocarbon, 55: Nr 2, 2013.Southern Hemisphere Zone 3 is bounded in the north by the equator and in the south by the mean tropical interconvergence zone. Data points are approximately monthly.
The dataset calrange: [1950:2011.2] f14crange:[.9730:1.670]
Annual growth rings in a sample of Parana pine (Araucaria angustifolia): Toward improving the 14C calibration curve for the Southern Hemisphere
Guaciara M Santos, Roberto Linares, Claudio S Lisi, Mario Tomazello Filho Quaternary Geochronology 25 (2015) 96-103http://dx.doi.org/10.1016/j.quageo.2014.10.004
The dataset calrange: [1927.95:1997.9] f14crange:[.970:1.627]
Andrews, Allen H, Daria Siciliano, Donald C Potts, Edward E DeMartini, Stephannie Covarrubias Bomb radiocarbon and the Hawaiian Archipelago: Coral, otoliths and seawater. Radiocarbon Volume 58, Issue 3 September 2016 , pp. 531-548
http://dx.doi.org/10.1017/RDC.2016.32
Data points are approximately every 3 months.The dataset calrange: [1939.5:2002.5] f14crange:[.934:1.182]