neo1 on the roof of northern bus stop. in the west corner
neo2 is on the southern parking lot.
 the white lines of the parking lot form a pattern like

| | | | PPPP
.-3-2-1-PPPP
| | | | PPPP

where P represents trees and the GPS starts from point 1 and moved
according to the sequence 1, 2, 3, 2, 1.