The main number is Sun's Altitude. It indicates how up in the sky the sun is from the horizon. As such negative value indicates the sun being bellow the horizon line.
A few numbers to note
| -0.833 | Sun Set/Rise |
| -18 | Esha/Subh Sadik Time |
Indicates local time. As such Duhr/Zawwal is always when the sun crosses 180 degrees of Azimuth. And at 360, it's mid night.