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Table 8.

Top-down estimated emissions (tonnes/h) for measured NMHC in the SJB. DOI: https://doi.org/10.1525/elementa.038.t8

Species	Mean Estimated Emissions tonnes/h	Low–High Emission Range tonnes/h
CH₄^a	62 ± 23	35 to 96
C₂H₆	5.0 ± 1.9	2.9 to 7.8
C₃H₈	3.5 ± 1.3	2.0 to 5.4
iC₄H₁₀	0.8 ± 0.3	0.5 to 1.3
nC₄H₁₀	1.4 ± 0.5	0.8 to 2.2
iC₅H₁₂	0.6 ± 0.2	0.3 to 0.9
nC₅H₁₂	0.5 ± 0.2	0.3 to 0.8
C₃-C₅ total	6.8 ± 2.5	3.9 to 10.6

Species	Mean Estimated Emissions tonnes/h	Low–High Emission Range tonnes/h
CH₄^a	62 ± 23	35 to 96
C₂H₆	5.0 ± 1.9	2.9 to 7.8
C₃H₈	3.5 ± 1.3	2.0 to 5.4
iC₄H₁₀	0.8 ± 0.3	0.5 to 1.3
nC₄H₁₀	1.4 ± 0.5	0.8 to 2.2
iC₅H₁₂	0.6 ± 0.2	0.3 to 0.9
nC₅H₁₂	0.5 ± 0.2	0.3 to 0.8
C₃-C₅ total	6.8 ± 2.5	3.9 to 10.6

^aBased on Smith et al. (2017).