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               11.5 +/-    1.08      28.9 +/-    1.08  0.050 / 0.080
G07     80.4           63.7               10.4 +/-    0.70      11.5 +/-    0.70  0.050 / 0.070
G08     47.1           35.3                7.9 +/-    0.44      12.4 +/-    0.44  0.030 / 0.050
G09     178.3          32.1               11.6 +/-    1.69      19.5 +/-    1.69  0.030 / 0.050
G11     111.2          38.7               10.3 +/-    1.03      15.3 +/-    1.03  0.050 / 0.120
G13     319.2          16.7                6.6 +/-    1.63      15.8 +/-    1.63  0.050 / 0.110
G17     200.2          19.7               12.4 +/-    2.26      27.4 +/-    2.26  0.060 / 0.060
G18     96.9           18.9                9.4 +/-    0.72      21.3 +/-    0.72  0.040 / 0.060
G28     278.4          51.9               11.3 +/-    0.99      13.9 +/-    0.99  0.050 / 0.140
G30     343.7          66.8                6.9 +/-    0.76       7.4 +/-    0.76  0.060 / 0.120