PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-20:43:00
G01     88.3           31.8               14.4 +/-    0.97      24.2 +/-    0.97  0.040 / 0.070
G07     127.3          38.7               16.4 +/-    0.95      24.3 +/-    0.95  0.050 / 0.070
G11     65.6           38.8               13.9 +/-    1.66      20.6 +/-    1.66  0.060 / 0.050
G13     292.6          37.2               11.5 +/-    1.69      17.6 +/-    1.69  0.040 / 0.040
G15     314.0          10.9                0.7 +/-   25.09       1.8 +/-   25.09  0.130 / 0.120
G17     214.3          55.9               17.7 +/-    0.58      20.9 +/-    0.58  0.130 / 0.160
G18     60.1           22.4               11.8 +/-    1.91      24.5 +/-    1.91  0.060 / 0.110
G19     214.5          28.3               18.6 +/-    1.46      33.8 +/-    1.46  0.070 / 0.120
G28     342.2          61.6               13.4 +/-    0.73      15.0 +/-    0.73  0.030 / 0.030
G30     110.2          74.1               15.9 +/-    0.43      16.5 +/-    0.43  0.030 / 0.040