import numpy as np

def calc_chratios(data,pos_map,start,end):
    view = data[[pos_map.succ_count, pos_map.fail_count, pos_map.commit_count], :]
    view = view[:, start:end]

    all = np.cumsum(view, axis=1)
    succ = all[0, :]
    commit = all[0, :] + all[1, :]
    commit += 0.0000001
    y = succ / commit
    y = y.ravel()
    return int(all[0, -1]), int(all[0, -1] + all[1, -1]), y