PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-20:12:40
G07     49.2           68.0               11.8 +/-    0.59      12.6 +/-    0.59  0.030 / 0.020
G08     54.6           42.6               10.8 +/-    0.99      15.1 +/-    0.99  0.030 / 0.030
G09     179.4          43.5               12.8 +/-    1.03      17.6 +/-    1.03  0.170 / 0.150
G11     122.7          32.5               13.0 +/-    0.89      21.7 +/-    0.89  0.140 / 0.100
G18     106.2          13.7               12.8 +/-    2.14      32.8 +/-    2.14  0.070 / 0.060
G23     160.9          14.1               12.7 +/-    2.06      32.3 +/-    2.06  0.060 / 0.060
G27     38.9           13.8                8.8 +/-    2.55      22.5 +/-    2.55  0.250 / 0.180
G28     263.8          46.3               12.6 +/-    4.21      16.7 +/-    4.21  0.110 / 0.290
G30     327.0          56.3               11.6 +/-    0.63      13.6 +/-    0.63  0.030 / 0.060