PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-15:57:40
G01     119.6          16.6               11.3 +/-    1.01      27.1 +/-    1.01  0.060 / 0.080
G07     85.9           62.7                9.8 +/-    0.44      10.9 +/-    0.44  0.040 / 0.070
G08     45.8           33.4                6.6 +/-    0.48      10.8 +/-    0.48  0.030 / 0.040
G09     177.9          28.9               11.3 +/-    2.54      20.2 +/-    2.54  0.030 / 0.040
G11     107.7          40.1               10.9 +/-    0.75      15.8 +/-    0.75  0.080 / 0.230
G13     317.9          19.2                9.5 +/-    1.39      21.2 +/-    1.39  0.080 / 0.290
G17     201.0          22.1               12.8 +/-    1.32      26.8 +/-    1.32  0.040 / 0.100
G18     94.1           20.2                9.9 +/-    1.29      21.6 +/-    1.29  0.050 / 0.070
G28     282.7          53.2               10.1 +/-    0.85      12.2 +/-    0.85  0.080 / 0.120
G30     351.3          69.9                9.4 +/-    1.01       9.9 +/-    1.01  0.070 / 0.140