PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-22:12:30
G02     204.4          39.7               19.9 +/-    2.26      29.1 +/-    2.26  0.050 / 0.090
G06     158.9          71.9               14.9 +/-    0.85      15.6 +/-    0.85  0.060 / 0.070
G12     308.6          16.2                8.4 +/-    3.41      20.3 +/-    3.41  0.090 / 0.130
G17     40.1           45.6               10.3 +/-    0.56      13.7 +/-    0.56  0.100 / 0.120
G19     10.4           62.5               11.2 +/-    0.79      12.4 +/-    0.79  0.050 / 0.080
G24     291.7          40.5               10.7 +/-    0.64      15.4 +/-    0.64  0.040 / 0.080
G28     104.3          32.2               13.6 +/-    1.22      22.8 +/-    1.22  0.160 / 0.320