PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-15:12:40
G01     55.7           28.5                9.5 +/-    1.30      17.1 +/-    1.30  0.040 / 0.040
G06     179.2          19.0               12.2 +/-    1.88      27.4 +/-    1.88  0.040 / 0.050
G07     143.6          15.5                9.3 +/-    2.80      22.8 +/-    2.80  0.180 / 0.270
G11     45.8           17.7                8.4 +/-    2.75      19.5 +/-    2.75  0.110 / 0.420
G13     259.9          33.3               12.2 +/-    1.44      20.0 +/-    1.44  0.110 / 0.150
G17     291.6          80.0               11.6 +/-    0.79      11.8 +/-    0.79  0.070 / 0.120
G19     238.5          56.7               13.3 +/-    2.16      15.6 +/-    2.16  0.040 / 0.020
G28     42.8           55.1               10.8 +/-    1.86      12.8 +/-    1.86  0.030 / 0.020
G30     146.2          50.2               10.9 +/-    0.60      13.7 +/-    0.60  0.080 / 0.080