PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-21:12:50
G01     108.4          24.4               12.9 +/-    1.48      25.6 +/-    1.48  0.030 / 0.050
G07     107.7          54.4               11.7 +/-    0.41      14.0 +/-    0.41  0.030 / 0.050
G08     41.8           20.4                9.3 +/-    2.83      20.3 +/-    2.83  0.040 / 0.050
G09     175.6          16.1               11.5 +/-    1.58      27.9 +/-    1.58  0.040 / 0.050
G11     89.1           42.8               12.0 +/-    0.80      16.7 +/-    0.80  0.200 / 0.370
G13     310.6          28.3                9.2 +/-    1.49      16.8 +/-    1.49  0.170 / 0.270
G17     204.1          37.5               12.8 +/-    1.02      19.4 +/-    1.02  0.080 / 0.140
G18     79.1           23.3               10.8 +/-    1.51      22.0 +/-    1.51  0.060 / 0.160
G28     306.9          59.0               10.7 +/-    1.18      12.2 +/-    1.18  0.030 / 0.030
G30     19.1           77.5               12.1 +/-    0.67      12.3 +/-    0.67  0.030 / 0.020