Receiver noise temperature as function of LO frequency. The data from 73 produced Band 5 cartridges have been averaged over polarization channels, IF bandwidth and the sidebands. The solid black line at 75 K shows the upper limit acceptable for the ALMA Band 5 specification. The data show that all receivers have noise temperatures below the limit at all frequencies within the RF band of 163–211 GHz. The dashed black line shows the specification (55 K) where all receivers must have a noise temperature below this value for 80% of the frequencies within the RF band of 163–211 GHz. The blue solid line is the noise temperature value averaged over 73 cartridges and the blue dashed lines indicate the 10th and 90th percentile deviations from the average. The light-blue colored area covers all measured values. The gray arrow in the plot points toward the range of the better performance.