R and D expense increased by $1,400,000 in the Q2 compared to the Q2 of 2022, which was attributable to higher personnel costs driven primarily by grow the business in the long term such that our operating expenses would decrease as a percentage of revenue and over time increase at a lower rate than revenue. Total non cash stock based compensation expense, which is allocated among cost of sales, R and D expense and SG and A expense, totaled $12,800,000 for the Q2 compared to $8,800,000 for the Q2 of 2022. The increase was primarily attributable to our annual equity awards In December of 2022, interest income increased by $2,000,000 for the Q2 of 2023 compared to the Q2 of 2022, Primarily as a result of higher interest rates and our purchases of marketable securities beginning in the Q3 of 2022. Our net loss for the Q2 of 2023 was $18,800,000 compared to a net loss of $1,600,000 for the Q2 of 2022. Adjusted EBITDA for the 2nd quarter was negative $5,300,000 compared to negative $11,200,000 for the comparable period in 2022, An improvement of $6,000,000 Net cash used in operating activities was $3,800,000 for the Q2 of 2023 $29,200,000 for the 6 months ended June 30, 2023.