PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-19:12:50
G01     125.0          12.7               15.9 +/-    2.44      41.8 +/-    2.44  0.130 / 0.080
G07     72.2           65.5               11.7 +/-    0.34      12.7 +/-    0.34  0.100 / 0.080
G08     48.6           37.0               10.1 +/-    0.79      15.4 +/-    0.79  0.030 / 0.030
G09     178.6          35.1               12.5 +/-    0.94      19.8 +/-    0.94  0.030 / 0.030
G11     114.4          37.1               13.7 +/-    0.50      20.9 +/-    0.50  0.030 / 0.030
G13     320.3          14.0                9.8 +/-    2.58      25.0 +/-    2.58  0.030 / 0.030
G17     199.4          17.6               12.5 +/-    1.93      29.1 +/-    1.93  0.080 / 0.110
G18     99.3           17.5               12.5 +/-    1.63      29.2 +/-    1.63  0.070 / 0.070
G28     274.4          50.7               12.9 +/-    3.56      16.1 +/-    3.56  0.280 / 0.350
G30     337.1          63.4               11.6 +/-    0.56      12.8 +/-    0.56  0.220 / 0.330