The following is a description of the stored files. Ooi2025_PRB +---Fig2 | FC_40Rx_S0p05A_1p5deg_AS00_int0s_m10G500ms_Mono_reg.tif : raw data with image registration only (multi-tiff). | FC_40Rx_S0p05A_1p5deg_AS00_int0s_m10G500ms_Mono_reg.csv : temperature (K), unsigned set magnetic field (Oe), and time (sec) for the multi-tiff images. | FC_40Rx_S0p05A_1p5deg_AS00_int0s_m10G500ms_Mono_subBG_crop_x2_Fig2.tif : multi-tiff images of Fig.2 after the image processing. A central part of the raw data was cropped. +---Fig3 | FC_40Rx_S0p05A_1p5deg_AS00_int0s_m3G500ms_Mono_reg.tif : raw data with image registration only (multi-tiff). | FC_40Rx_S0p05A_1p5deg_AS00_int0s_m3G500ms_Mono_reg.csv : temperature (K), unsigned set magnetic field (Oe), and time (sec) for the multi-tiff images. | FC_40Rx_S0p05A_1p5deg_AS00_int0s_m3G500ms_Mono_subBG_crop_x2_Fig3.tif : multi-tiff images of Fig.3 after the image processing. A center part of the raw data was cropped. +---Fig4 | FC_40Rx_S0p05A_1p5deg_AS00_int0s_15G500ms_Mono_reg.tif : raw data with image registration only (multi-tiff). | FC_40Rx_S0p05A_1p5deg_AS00_int0s_15G500ms_Mono_reg.csv : temperature (K), unsigned set magnetic field (Oe), and time (sec) for the multi-tiff images. | FC_40Rx_S0p05A_1p5deg_AS00_int0s_15G500ms_Mono_subBG_crop350_x2_Fig4.tif : multi-tiff images of Fig.4 after the image processing. A center part of the raw data was cropped. \---Fig5 FIg5.xlsx : Data for Fig5