Observations 1. Observing Lines & Frequencies H13CO+(J=1-0) 86.75433 GHz 2. Observed Regions/target sources TMC-1 3. Observing period: Nov. 2000 - Mar. 2001 4. Receiver frontend: BERAS 5. Receiver backend: AC45 6. Frequency & Velocity resolutions: 0.13 km/s 7. Total bandwidth & Velocity Coverage: 32 MHz 8. Typical system temperature & typical atmospheric opacity: 200 - 600 K 9. Main-beam efficiency: 0.51 10. Observation mode: position switch 11. OFF Position (s) if OTF/Position switch is applied; (+30', +30') from the map center (4h41m42.5s, 25d41'27") 12. Pointing Calibration & Pointing error: NML-Tau, < 5" 13. Intensity Calibration & Accuracy of absolute scale: 10% 14. Noise level: 0.12 K 15. CUBE FITS Information Mapping area: BLC (4h42m20.4s, 25d33'13") TRC (4h40m29.5s, 25d58'21") Grid spacing: 20.6" CUBE size: (x, y, z) 74 x 74 x 36 16. Other information