PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/08-14:43:00
G01     80.6           32.6                5.9 +/-    1.39       9.8 +/-    1.39  0.060 / 0.050
G07     131.4          35.1                8.3 +/-    0.95      13.1 +/-    0.95  0.040 / 0.050
G11     60.5           36.9                7.6 +/-    0.89      11.7 +/-    0.89  0.060 / 0.080
G13     285.0          38.6               10.3 +/-    4.22      15.3 +/-    4.22  0.050 / 0.080
G15     309.8          12.9                6.6 +/-    1.95      17.2 +/-    1.95  0.050 / 0.090
G17     219.7          57.9               10.6 +/-    1.20      12.3 +/-    1.20  0.050 / 0.080
G18     55.7           21.5                7.2 +/-    2.81      15.4 +/-    2.81  0.060 / 0.060
G19     217.3          34.9               10.4 +/-    1.59      16.5 +/-    1.59  0.060 / 0.050
G28     350.1          61.6                8.7 +/-    0.53       9.8 +/-    0.53  0.270 / 0.170
G30     123.8          68.6                9.8 +/-    0.65      10.4 +/-    0.65  0.210 / 0.220