When creating .echo file from .nxs.h5 the i00 (main sc current) is not properly populated. E.g. ``` $ grep i00 s16177_bug.echo * i00 25.741185 25.741185 * i00 1.455517 1.455517 * i00 7.641500 7.641500 * i00 15.374500 15.374500 * i00 30.840500 30.840500 * i00 25.741185 25.741185 * i00 77.237500 77.237500 ``` it should read ``` * i00 0.064000 0.064000 * i00 1.455517 1.455517 * i00 7.641500 7.641500 * i00 15.374500 15.374500 * i00 30.840500 30.840500 * i00 54.039000 54.039000 * i00 77.237500 77.237500 ```