Transmission and eclipse data. The top and centre panels show transmission spectra for moist scenario 2 (red), steam scenarios 3 (purple) and 4 (grey), and the desiccated scenario 4 (black) for the JWST/NIRSpec wavelength range 3 – 5 µm (top) and the JWST/MIRI wavelength range between 5 – 10 µm (centre) with simulated noise (black error bars). We chose the G395M grism setting with 10 pixels per bin (top) and the MIRI LRS setting with 5 pixels per bin (centre). The bottom panel shows eclipse spectra for cloud-free atmospheres for the dry biotic scenarios 1/2 (blue), the moist biotic scenario 2 (red), the abiotic steam scenarios 3/4 (purple), and the desiccated scenario 4 (black) for the JWST/MIRI wavelength range 5 – 10 µm with simulated noise (black error bars), where we combined 5 pixels per bin.