PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-21:12:50
G01     115.3          20.0               11.5 +/-    1.00      25.2 +/-    1.00  0.030 / 0.040
G07     95.8           59.9               12.9 +/-    0.33      14.6 +/-    0.33  0.030 / 0.030
G08     43.2           26.7                8.1 +/-    2.57      15.2 +/-    2.57  0.100 / 0.170
G09     176.8          23.0               11.4 +/-    1.19      23.4 +/-    1.19  0.130 / 0.170
G11     99.5           41.6               11.8 +/-    0.62      16.8 +/-    0.62  0.050 / 0.060
G13     315.4          23.1               10.0 +/-    1.52      20.5 +/-    1.52  0.040 / 0.050
G17     201.6          29.9               11.7 +/-    1.52      20.5 +/-    1.52  0.040 / 0.020
G18     87.0           21.7                9.8 +/-    1.41      20.7 +/-    1.41  0.040 / 0.030
G28     293.6          56.5               10.2 +/-    1.63      12.0 +/-    1.63  0.110 / 0.140
G30     355.4          72.3               11.4 +/-    1.17      11.9 +/-    1.17  0.110 / 0.170