PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-14:42:50
G01     104.5          26.0                8.2 +/-    1.99      15.7 +/-    1.99  0.030 / 0.050
G07     111.7          52.5                8.4 +/-    0.67      10.3 +/-    0.67  0.030 / 0.050
G08     41.9           20.6                5.8 +/-    0.41      12.5 +/-    0.41  0.050 / 0.050
G09     175.1          13.4               10.1 +/-    0.71      26.0 +/-    0.71  0.050 / 0.070
G11     85.9           43.5                8.1 +/-    0.70      11.2 +/-    0.70  0.050 / 0.100
G13     307.7          30.7               10.2 +/-    1.77      17.6 +/-    1.77  0.050 / 0.090
G17     206.2          37.3               11.0 +/-    1.31      16.7 +/-    1.31  0.070 / 0.130
G18     77.3           24.2                6.7 +/-    0.73      13.4 +/-    0.73  0.070 / 0.130
G28     309.8          59.0                8.4 +/-    0.90       9.6 +/-    0.90  0.060 / 0.100
G30     44.5           78.9                8.0 +/-    0.50       8.1 +/-    0.50  0.040 / 0.080