PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-16:58:00
G01     126.2          11.5               10.6 +/-    3.25      28.7 +/-    3.25  0.070 / 0.090
G07     68.7           65.9               10.9 +/-    0.65      11.8 +/-    0.65  0.060 / 0.080
G08     50.3           39.3                9.6 +/-    0.70      14.1 +/-    0.70  0.030 / 0.050
G09     178.9          37.3               11.5 +/-    1.41      17.6 +/-    1.41  0.030 / 0.050
G11     116.8          36.2               10.7 +/-    1.01      16.6 +/-    1.01  0.060 / 0.090
G13     320.7          12.7                8.4 +/-    1.33      22.0 +/-    1.33  0.090 / 0.090
G17     199.5          14.9               10.5 +/-    1.27      26.3 +/-    1.27  0.130 / 0.350
G18     101.6          16.7               10.3 +/-    1.42      24.5 +/-    1.42  0.120 / 0.310
G28     271.3          49.2                9.3 +/-    0.76      11.8 +/-    0.76  0.120 / 0.360
G30     336.7          62.9               10.1 +/-    0.92      11.2 +/-    0.92  0.120 / 0.310