PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-18:12:50
G01     108.0          24.4               14.1 +/-    2.34      27.9 +/-    2.34  0.030 / 0.030
G07     108.6          53.0               11.7 +/-    0.95      14.2 +/-    0.95  0.030 / 0.030
G08     41.9           21.4                9.9 +/-    2.60      20.9 +/-    2.60  0.030 / 0.050
G09     175.9          16.4               12.1 +/-    1.46      29.2 +/-    1.46  0.030 / 0.040
G11     89.5           43.0               13.3 +/-    0.73      18.5 +/-    0.73  0.040 / 0.060
G13     310.4          28.5                9.8 +/-    1.52      17.6 +/-    1.52  0.040 / 0.050
G17     204.4          36.2               11.5 +/-    1.01      17.9 +/-    1.01  0.080 / 0.190
G18     80.0           23.6               12.8 +/-    1.75      25.8 +/-    1.75  0.060 / 0.170
G28     305.7          58.6               11.3 +/-    1.21      13.0 +/-    1.21  0.070 / 0.170
G30     27.3           77.9               11.8 +/-    1.09      12.1 +/-    1.09  0.090 / 0.160