(a) Radio emission at 3.7 cm from T Tau on 1997 November 17. The map has been CLEANed and restored with the beam shown (0﹩\farcs﹩23 × 0﹩\farcs﹩21, P.A. −2°). The peak flux density is 1.43 mJy beam⁻¹. The contour levels are −1, 1, 2, 4, 6, 8, 10, 14, 18, 22, 26, and 30 times 0.07 mJy beam⁻¹. T Tau N appears unresolved, while T Tau S shows elongation along the northeast and northwest. (b) LCP − RCP map for 3.7 cm on 1992 November 17. The synthesized beam is shown (0﹩\farcs﹩28 × 0﹩\farcs﹩25, P.A. −1°). The contour levels are −25, 25, 35, 45, 55, 65, 75, 85, and 95 times 0.0035 mJy beam⁻¹. The cross marks the position of the peak intensity in the I map. Note that the LCP is strongest toward the northeast. (c) The 3.7 cm map for 1995 July 14. The peak flux density is 2.42 mJy beam⁻¹. The restoring beam is shown in the inset (0﹩\farcs﹩23 × 0﹩\farcs﹩22, P.A. −50°). The contour levels are the same as in (a). Note the elongation in the emission from T Tau S toward the northeast. (d) LCP − RCP map for 1995 July 14. The synthesized beam is shown (0﹩\farcs﹩29 × 0﹩\farcs﹩27, P.A. 15°). The contour levels are the same as in (b).