PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-19:42:40
G01     46.9           22.9               11.6 +/-    2.31      23.7 +/-    2.31  0.040 / 0.050
G06     177.9          26.8               17.1 +/-    2.27      32.2 +/-    2.27  0.040 / 0.050
G11     43.7           11.6               11.3 +/-    2.96      30.5 +/-    2.96  0.270 / 0.470
G13     245.9          29.0               15.3 +/-    1.68      27.4 +/-    1.68  0.210 / 0.280
G15     279.4          15.2               12.5 +/-    1.20      31.0 +/-    1.20  0.200 / 0.350
G17     330.6          77.6               15.1 +/-    0.44      15.4 +/-    0.44  0.140 / 0.380
G19     252.4          63.3               15.6 +/-    0.66      17.2 +/-    0.66  0.100 / 0.190
G24     318.5          11.4               -2.0 +/-   37.07      -5.5 +/-   37.07  0.110 / 0.140
G28     51.2           54.6               14.9 +/-    1.52      17.9 +/-    1.52  0.040 / 0.040
G30     150.6          35.4               16.0 +/-    0.74      25.2 +/-    0.74  0.040 / 0.040