PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/14-13:58:00
G01     91.9           30.6                8.6 +/-    1.23      14.9 +/-    1.23  0.050 / 0.050
G07     123.8          43.7                9.3 +/-    0.66      12.8 +/-    0.66  0.040 / 0.050
G08     42.1           11.9                6.2 +/-    3.86      16.5 +/-    3.86  0.040 / 0.070
G11     71.0           41.4                8.3 +/-    0.95      11.8 +/-    0.95  0.050 / 0.080
G13     296.5          36.3                8.0 +/-    4.84      12.4 +/-    4.84  0.050 / 0.050
G17     212.3          48.1                8.9 +/-    0.76      11.5 +/-    0.76  0.040 / 0.060
G18     65.2           23.9                8.1 +/-    1.23      16.2 +/-    1.23  0.030 / 0.060
G19     212.6          26.1                7.9 +/-    1.95      15.1 +/-    1.95  0.050 / 0.060
G28     331.1          61.1                6.5 +/-    0.64       7.3 +/-    0.64  0.130 / 0.180
G30     98.8           76.5                7.9 +/-    0.82       8.2 +/-    0.82  0.140 / 0.120