Fig. 3: Pictorial representation of all the precision measurements for para-H216O.
From: Spectroscopic-network-assisted precision spectroscopy and its application to water

The para energy levels (characterized with even v3 + Ka + Kc values and denoted with squares) are placed palindromically in increasing (upper half) and decreasing (lower half) energetic order of their vibrational parents and distinguished with different colors for improved transparency. The \({J}_{{K}_{\mathrm{a}},{K}_{\mathrm{c}}}\) rotational labels70 are indicated individually for each rovibrational state, while the (v1 v2 v3) vibrational assignments69 are marked in the left-side color legend. Transitions with blue arrows are results of the present NICE-OHMS experiments, while those with orange and cyan colors are taken from refs. 37,42, respectively. Source Data are provided as a Source Data file.