PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-20:42:50
G01     107.1          25.0               13.2 +/-    0.92      25.7 +/-    0.92  0.030 / 0.040
G07     109.6          53.2               11.8 +/-    0.96      14.4 +/-    0.96  0.030 / 0.040
G08     41.7           19.5                7.0 +/-    1.73      15.7 +/-    1.73  0.070 / 0.170
G09     175.4          15.0               12.1 +/-    1.43      30.0 +/-    1.43  0.070 / 0.140
G11     87.4           42.8               11.3 +/-    0.78      15.7 +/-    0.78  0.050 / 0.040
G13     309.6          29.1                9.5 +/-    1.04      17.0 +/-    1.04  0.060 / 0.050
G17     204.6          38.6               12.3 +/-    0.73      18.3 +/-    0.73  0.190 / 0.230
G18     77.9           23.5               11.8 +/-    1.17      23.8 +/-    1.17  0.160 / 0.250
G28     309.1          59.3                9.2 +/-    0.98      10.5 +/-    0.98  0.020 / 0.030
G30     26.0           78.2               11.0 +/-    0.85      11.2 +/-    0.85  0.030 / 0.030