PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-23:58:00
G02     272.0          81.0               11.3 +/-    0.64      11.5 +/-    0.64  0.040 / 0.040
G05     168.2          22.8               20.9 +/-    2.05      43.0 +/-    2.05  0.040 / 0.040
G06     40.0           51.3               10.3 +/-    0.56      12.8 +/-    0.56  0.040 / 0.110
G12     320.9          59.1               11.3 +/-    0.73      12.9 +/-    0.73  0.050 / 0.120
G17     74.8           21.4               11.1 +/-    0.62      23.6 +/-    0.62  0.100 / 0.240
G19     62.7           35.8               10.8 +/-    0.44      16.9 +/-    0.44  0.120 / 0.200
G24     238.6          30.9               16.5 +/-    2.06      28.4 +/-    2.06  0.040 / 0.040
G25     317.6          17.2               10.4 +/-    2.30      24.6 +/-    2.30  0.040 / 0.040