function "detection_out()" issue

[AllanZuo]

In "detection_out()" function，I think mbox_loc and variance are the same. Am I right?
Here is the source code:
Each prediction is: [label, confidence, xmin, ymin, xmax, ymax]
mbox_loc = predictions[:, :, :4]
variances = predictions[:, :, -4:]
mbox_priorbox = predictions[:, :, -8:-4]
mbox_conf = predictions[:, :, 4:-8]
results = []
...