Notes. The second column lists the stacking approach according to the observations. The number in the brackets means the number of the generated spectra after stacking. The individual XMM-Newton observations are shown in the third column. For clarity, the corresponding labels of the stacked and individual spectra are listed in the fourth column, where the time-resolved spectra are referred to as T1...T11 chronologically and the flux-resolved spectra are referred to as F1...F4, from the faintest to brightest state. For each source, except for 1H 1934-063, the time-averaged spectrum from all observations is also generated and referred to as the ‘avg’ spectrum, while for 1H 1934-063, the two new observations (Obs. ID: 08910101(2)01) are stacked and named as ‘2021’.