PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-17:12:50
G01     122.3          14.7               11.6 +/-    2.70      29.0 +/-    2.70  0.130 / 0.070
G07     80.4           63.7                9.4 +/-    0.67      10.4 +/-    0.67  0.080 / 0.080
G08     47.1           35.3                9.4 +/-    1.11      14.8 +/-    1.11  0.040 / 0.040
G09     178.3          32.1               11.2 +/-    0.85      18.7 +/-    0.85  0.030 / 0.030
G11     111.2          38.7               10.2 +/-    1.36      15.1 +/-    1.36  0.050 / 0.100
G13     319.2          16.7                8.4 +/-    4.58      20.1 +/-    4.58  0.050 / 0.090
G17     200.2          19.7               12.4 +/-    1.46      27.4 +/-    1.46  0.140 / 0.360
G18     96.9           18.9                9.9 +/-    1.76      22.4 +/-    1.76  0.180 / 0.430
G28     278.4          51.9                9.5 +/-    2.49      11.7 +/-    2.49  0.110 / 0.210
G30     343.7          66.8               10.3 +/-    0.48      11.1 +/-    0.48  0.110 / 0.210