PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-09:27:30
G07     44.4           69.0                5.1 +/-    0.89       5.5 +/-    0.89  0.030 / 0.030
G08     57.8           46.7                2.7 +/-    0.44       3.5 +/-    0.44  0.040 / 0.040
G09     178.3          41.8                7.2 +/-    0.91      10.1 +/-    0.91  0.140 / 0.190
G11     124.6          33.1                6.8 +/-    0.76      11.2 +/-    0.76  0.120 / 0.250
G18     107.6          14.1                4.9 +/-    1.17      12.3 +/-    1.17  0.050 / 0.120
G23     159.7          10.5                4.1 +/-    2.81      11.4 +/-    2.81  0.050 / 0.080
G27     38.1           11.8                2.5 +/-    1.10       6.8 +/-    1.10  0.120 / 0.410
G28     262.6          44.2                3.9 +/-    1.18       5.3 +/-    1.18  0.130 / 0.380
G30     326.2          56.0                3.0 +/-    0.91       3.5 +/-    0.91  0.240 / 0.380