PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-21:27:50
G01     107.1          25.0               12.2 +/-    1.35      23.9 +/-    1.35  0.030 / 0.040
G07     109.3          53.6               11.7 +/-    0.75      14.1 +/-    0.75  0.030 / 0.050
G08     41.6           19.3                8.8 +/-    2.03      19.7 +/-    2.03  0.050 / 0.050
G09     175.3          14.9               12.0 +/-    1.03      29.9 +/-    1.03  0.070 / 0.050
G11     87.4           42.8               11.7 +/-    0.73      16.3 +/-    0.73  0.190 / 0.220
G13     309.6          29.1               12.0 +/-    0.88      21.4 +/-    0.88  0.140 / 0.190
G17     204.5          38.9               13.7 +/-    0.74      20.3 +/-    0.74  0.030 / 0.030
G18     77.7           23.4                9.8 +/-    2.16      19.8 +/-    2.16  0.030 / 0.030
G28     309.4          59.4               11.7 +/-    0.84      13.3 +/-    0.84  0.070 / 0.120
G30     24.1           78.1               12.0 +/-    0.93      12.2 +/-    0.93  0.060 / 0.140