PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-22:12:50
G01     81.6           32.8                8.9 +/-    1.35      14.7 +/-    1.35  0.050 / 0.070
G07     131.4          34.3               11.0 +/-    0.79      17.8 +/-    0.79  0.050 / 0.070
G11     59.8           35.7                9.8 +/-    0.80      15.3 +/-    0.80  0.120 / 0.100
G13     285.6          38.2               12.0 +/-    0.96      18.0 +/-    0.96  0.100 / 0.120
G15     309.8          13.0                8.4 +/-    2.21      22.0 +/-    2.21  0.060 / 0.110
G17     219.6          62.1               12.0 +/-    1.13      13.4 +/-    1.13  0.060 / 0.080
G18     54.4           20.4                8.6 +/-    2.83      18.7 +/-    2.83  0.040 / 0.040
G19     217.5          33.2               12.4 +/-    1.36      20.4 +/-    1.36  0.030 / 0.040
G28     354.3          61.6                8.0 +/-    0.84       9.0 +/-    0.84  0.040 / 0.030
G30     122.8          69.9               10.1 +/-    0.73      10.7 +/-    0.73  0.030 / 0.030