PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-19:12:50
G01     74.3           32.8               11.9 +/-    0.95      19.7 +/-    0.95  0.040 / 0.050
G07     135.1          27.8               14.8 +/-    0.90      27.2 +/-    0.90  0.030 / 0.050
G11     55.1           32.6               11.1 +/-    1.45      18.4 +/-    1.45  0.070 / 0.110
G13     277.9          38.6               13.1 +/-    1.96      19.5 +/-    1.96  0.070 / 0.120
G15     304.7          14.9                8.3 +/-    2.21      20.8 +/-    2.21  0.030 / 0.030
G17     226.6          66.2               15.0 +/-    0.97      16.2 +/-    0.97  0.030 / 0.030
G18     50.1           18.7               11.3 +/-    2.72      25.6 +/-    2.72  0.110 / 0.190
G19     221.0          39.4               14.0 +/-    1.78      20.6 +/-    1.78  0.130 / 0.210
G28     3.7            61.2               12.6 +/-    0.70      14.2 +/-    0.70  0.060 / 0.100
G30     131.9          62.8               14.0 +/-    0.52      15.5 +/-    0.52  0.060 / 0.130