a): Herschel-based T_dust map of TMC-1. The numbers indicate the positions where high S/N NH₃(1, 1) and (2, 2) spectra were taken and used to calculate the physical parameters of the gas (see Table 2). b) Herschel-based N(H₂) map with the NH₃(1, 1) main group integrated intensity contours: 0.6, 1.0, and 2.0 Kkm s^-1 (20, 35, and 65% of the maximum). The secondary line components were subtracted from the spectra. Black ellipses indicate the two PGCCs in TMC-1. The positions of TMC-1 CP, TMC-1(NH3), the SO peak, and IRAS 04381+2540 are indicated with a diamond, a triangle, a square, and an asterisk, respectively. HPBW of 40″ is shown in the left bottom corner.