AI Analysis: Natural gas liquids and sulphur products from processing plants, monthly supply

Executive Summary

Statistics Canada Table 25100036 tracks 37 years (1989–2025) of monthly natural gas liquids and sulphur supply from Canadian processing plants across 7 product types and 7 regions, comprising 6,460 non-null records across 24 unique time series. Sulphur dominates the dataset by a wide margin, with a mean output of 384,248 (thousands of tonnes) that dwarfs all NGL products and creates extreme right-skew in the overall distribution (overall mean: 61,249 vs. median: 466). The data is remarkably consistent over time, with no extreme outliers detected using a strict 3× IQR threshold, and Alberta stands out as the dominant producing province for NGLs in Canada.

Key Findings

• Sulphur is the highest-volume product by a large margin, with a mean monthly supply of 384,248 and a maximum of 760,339 (in thousands of tonnes), dwarfing all NGL categories.
• The overall supply distribution is heavily right-skewed, with a mean of 61,249 versus a median of just 466 and an IQR of only 1,050 — almost entirely driven by Sulphur's outsized values.
• Ethane is the most consistent NGL product, with a mean of 698, a median of 901.5, and a relatively low standard deviation of 507, indicating stable long-term production.
• Propane and Butane show high variability relative to their medians (medians of 53 and 37 respectively, with standard deviations of 440 and 271), suggesting significant seasonal or regional fluctuations in production.
• No extreme outliers were detected across all 6,460 records using the strict 3× IQR method, indicating consistent data reporting and smooth production trends over the 36-year period.
• Alberta is the dominant NGL-producing province in Canada, with national totals aggregated across 7 regions including British Columbia, Saskatchewan, Manitoba, Ontario, and Nova Scotia.
• Gas use reprocessing categories (flared, plant fuel, shrinkage) are low-volume but stable, with flared gas averaging just 2.4 and shrinkage averaging 293 in thousands of cubic metres per month.