PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-18:27:50
G01     120.4          16.2               14.1 +/-    2.84      34.0 +/-    2.84  0.040 / 0.040
G07     85.6           62.4               12.0 +/-    0.63      13.3 +/-    0.63  0.030 / 0.040
G08     45.7           32.8                9.5 +/-    1.14      15.7 +/-    1.14  0.050 / 0.070
G09     177.9          29.5               13.9 +/-    0.85      24.5 +/-    0.85  0.090 / 0.090
G11     107.9          39.7               13.1 +/-    0.63      19.2 +/-    0.63  0.030 / 0.030
G13     318.3          18.5               10.5 +/-    2.22      23.9 +/-    2.22  0.030 / 0.030
G17     200.5          22.7               14.7 +/-    2.30      30.2 +/-    2.30  0.140 / 0.340
G18     94.2           19.9               11.0 +/-    3.09      24.4 +/-    3.09  0.120 / 0.260
G28     282.5          53.4               13.7 +/-    2.70      16.6 +/-    2.70  0.110 / 0.200
G30     346.4          68.3               11.2 +/-    0.79      12.0 +/-    0.79  0.100 / 0.230