PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-19:12:40
G01     90.4           31.3               13.6 +/-    0.73      23.3 +/-    0.73  0.030 / 0.070
G07     125.8          39.5               13.8 +/-    0.95      20.2 +/-    0.95  0.030 / 0.070
G11     67.9           39.8               11.6 +/-    0.50      16.9 +/-    0.50  0.060 / 0.060
G13     294.7          36.7               12.6 +/-    1.24      19.3 +/-    1.24  0.060 / 0.060
G15     315.2          10.2              -10.5 +/-    8.05     -29.1 +/-    8.05  0.040 / 0.090
G17     213.0          53.3               16.1 +/-    0.88      19.6 +/-    0.88  0.040 / 0.100
G18     62.4           23.1               10.7 +/-    0.62      21.8 +/-    0.62  0.130 / 0.120
G19     213.6          26.8               15.7 +/-    2.06      29.5 +/-    2.06  0.110 / 0.120
G28     337.7          61.5               10.4 +/-    0.58      11.6 +/-    0.58  0.060 / 0.170
G30     105.9          74.7               13.3 +/-    1.16      13.7 +/-    1.16  0.060 / 0.170